diff --git a/README.md b/README.md
index 1e25dc2..da88772 100644
--- a/README.md
+++ b/README.md
@@ -16,17 +16,21 @@ Wymagane zmienne środowiskowe (plik `.env`):
 | --------------- | ----------------------------------------------------------- |
 | `DISCORD_TOKEN` | Token bota Discord.                                          |
 | `GUILD_ID`      | Opcjonalnie - synchronizuje komendy tylko z jednym serwerem. |
+| `POSTGRES_PASSWORD` | Hasło użytkownika bazy; domyślnie `zyrarbot`, zalecana zmiana w `.env`. |
+| `POSTGRES_DB` / `POSTGRES_USER` | Opcjonalna nazwa bazy i użytkownika; domyślnie `zyrarbot`. |
 
 Panel działa pod `http://localhost:8000` podczas uruchomienia lokalnego. W Dockerze
 jest dostępny pod `http://localhost` po wykonaniu `docker compose up --build`.
 
 Panel obsługuje wiele serwerów Discorda. Wybór serwera w nagłówku przełącza jego
-osobną kolejkę, historię, bazę plików i ustawienia odtwarzania. Istniejące dane ze
-starego, wspólnego formatu są przypisywane do pierwszego użytego serwera.
-Historia jest zapisywana w osobnych plikach `config/history/<guild_id>.json`, a
-uploady w katalogach `uploads/<guild_id>/`.
-Ostatnia kolejka jest zapisywana w `config/queues/<guild_id>.json` przy zatrzymaniu
-lub rozłączeniu i może zostać przywrócona z widoku kolejki.
+osobną kolejkę, historię, bazę plików i ustawienia odtwarzania. Ustawienia, historia
+i migawki kolejek przechodzą przez porty persystencji, a PostgreSQL jest obecnym
+adapterem wybranym w korzeniu aplikacji. Baza działa jako usługa Compose, a jej dane
+trwale przechowuje wolumen `postgres_data`. Przy pierwszym uruchomieniu
+bot importuje istniejące pliki JSON z `config/` do bazy, a pliki źródłowe zostają
+na miejscu jako kopia. Starsze wspólne dane są przypisywane do pierwszego serwera,
+do którego bot należy. Uploady pozostają w
+katalogach `uploads/<guild_id>/`.
 
 ## Komendy Discorda
 
@@ -78,12 +82,15 @@ odpowiadające warstwom aplikacji:
 zyrarbot/
 ├── settings.py        Settings - konfiguracja ze zmiennych środowiskowych
 ├── application.py     Application - korzeń kompozycji, spina bota i API
-├── storage/           Warstwa trwałości (pliki JSON, katalog uploadów)
-│   ├── json_file_store.py          JsonFileStore
-│   ├── guild_config_repository.py  GuildConfigRepository
-│   ├── history_repository.py       HistoryRepository
-│   ├── uploads_repository.py       UploadsRepository
-│   └── upload_file_info.py         UploadFileInfo
+├── storage/
+│   ├── ports/          GuildConfigRepository, HistoryRepository,
+│   │                   QueueRepository, UploadsRepository, Persistence
+│   ├── adapters/
+│   │   ├── postgres/   PostgresGuildConfig, PostgresHistory, PostgresQueue,
+│   │   │               PostgresPersistence, PostgresDatabase
+│   │   ├── filesystem/ Adapter plików uploadu
+│   │   └── json/       Adapter plikowego magazynu JSON
+│   └── upload_file_info.py UploadFileInfo
 ├── audio/             Pozyskiwanie dźwięku
 │   ├── ytdl_options.py   YtdlOptions
 │   ├── ytdl_source.py    YTDLSource
diff --git a/compose.yaml b/compose.yaml
index 2ae4621..0a442cb 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -1,5 +1,21 @@
 services:
-  # Bot Discorda wraz z API i panelem webowym serwowanym przez FastAPI.
+  database:
+    image: postgres:17-alpine
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-zyrarbot}
+      POSTGRES_USER: ${POSTGRES_USER:-zyrarbot}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-zyrarbot}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+      start_period: 10s
+    restart: unless-stopped
+    ports:
+      - "5432:5432/tcp"
   discord-bot:
     build:
       context: .
@@ -8,10 +24,21 @@ services:
     environment:
       - DISCORD_TOKEN=${DISCORD_TOKEN}
       - GUILD_ID=${GUILD_ID:-}
+      - POSTGRES_DB=${POSTGRES_DB:-zyrarbot}
+      - POSTGRES_USER=${POSTGRES_USER:-zyrarbot}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-zyrarbot}
+      - POSTGRES_HOST=database
+      - POSTGRES_PORT=5432
       - PYTHONUNBUFFERED=1
+    depends_on:
+      database:
+        condition: service_healthy
     volumes:
       - ./config:/app/config
       - ./uploads:/app/uploads
     ports:
       - "80:8000"
     restart: unless-stopped
+
+volumes:
+  postgres_data:
diff --git a/frontend/src/components/HistoryPanel.vue b/frontend/src/components/HistoryPanel.vue
index 104e5c6..1061e3c 100644
--- a/frontend/src/components/HistoryPanel.vue
+++ b/frontend/src/components/HistoryPanel.vue
@@ -26,7 +26,7 @@ async function replay(entry: HistoryTrack) {
   const pendingId = addPendingTrack(props.status.active_voice_channel.guild_id, entry.title)
   try {
     if (entry.is_local) {
-      const path = entry.filepath ?? entry.url ?? entry.title
+      const path = entry.url ?? entry.title
       await enqueue(path.split(/[\\/]/).pop() ?? path)
       return
     }
diff --git a/frontend/src/types/status.ts b/frontend/src/types/status.ts
index 0b875c8..36fdd81 100644
--- a/frontend/src/types/status.ts
+++ b/frontend/src/types/status.ts
@@ -41,7 +41,6 @@ export interface HistoryTrack {
   url: string | null
   duration: number | null
   is_local: boolean
-  filepath: string | null
 }
 
 export interface UploadedFile {
diff --git a/requirements.txt b/requirements.txt
index f626305..3e2a489 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ fastapi
 uvicorn
 websockets
 python-multipart
+psycopg[binary]
diff --git a/zyrarbot/application.py b/zyrarbot/application.py
index 550f00d..db98363 100644
--- a/zyrarbot/application.py
+++ b/zyrarbot/application.py
@@ -19,11 +19,9 @@ from zyrarbot.music.music_player import MusicPlayer
 from zyrarbot.music.notification_channel_resolver import NotificationChannelResolver
 from zyrarbot.music.track_embed_factory import TrackEmbedFactory
 from zyrarbot.settings import Settings
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
-from zyrarbot.storage.history_repository import HistoryRepository
-from zyrarbot.storage.json_file_store import JsonFileStore
-from zyrarbot.storage.queue_repository import QueueRepository
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.adapters.filesystem.uploads import UploadsRepository
+from zyrarbot.storage.adapters.postgres.persistence import PostgresPersistence
+from zyrarbot.storage.ports.persistence import Persistence
 from zyrarbot.ui.api.factory import mount_api
 from zyrarbot.ui.bot.client import MusicBot
 from zyrarbot.ui.bot.guild_resolver import GuildResolver
@@ -34,18 +32,21 @@ logger = logging.getLogger(__name__)
 class Application:
     """Korzeń kompozycji: składa wszystkie zależności i prowadzi bota razem z API."""
 
-    def __init__(self, settings: Settings | None = None):
+    def __init__(
+        self,
+        settings: Settings | None = None,
+        persistence: Persistence | None = None,
+    ):
         self.settings = settings or Settings.from_env()
-
-        self.config = GuildConfigRepository(
-            JsonFileStore(self.settings.config_file),
-            fallback_plays=self.settings.default_plays,
-        )
-        self.history = HistoryRepository(
-            JsonFileStore(self.settings.history_file), limit=self.settings.history_limit
+        self.persistence: Persistence = persistence or PostgresPersistence(
+            config_dir=self.settings.config_dir,
+            default_plays=self.settings.default_plays,
+            history_limit=self.settings.history_limit,
         )
+        self.config = self.persistence.config
+        self.history = self.persistence.history
         self.uploads = UploadsRepository(self.settings.uploads_dir)
-        self.queues = QueueRepository(os.path.join(self.settings.config_dir, "queues"))
+        self.queues = self.persistence.queues
         self.tracks = TrackFactory(self.uploads, MediaProbe())
 
         self._server: uvicorn.Server | None = None
@@ -55,6 +56,7 @@ class Application:
             self.uploads,
             self.config,
             self.history,
+            self.persistence,
             restart_callback=self.schedule_restart,
         )
         self.guilds = GuildResolver(self.bot)
diff --git a/zyrarbot/audio/track_factory.py b/zyrarbot/audio/track_factory.py
index a5ce606..0031360 100644
--- a/zyrarbot/audio/track_factory.py
+++ b/zyrarbot/audio/track_factory.py
@@ -10,7 +10,7 @@ import yt_dlp
 from zyrarbot.audio.media_probe import MediaProbe
 from zyrarbot.audio.ytdl_options import YtdlOptions
 from zyrarbot.audio.ytdl_source import YTDLSource
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.uploads import UploadsRepository
 
 
 class TrackFactory:
diff --git a/zyrarbot/music/history_entry.py b/zyrarbot/music/history_entry.py
index d573e4f..bf8f90b 100644
--- a/zyrarbot/music/history_entry.py
+++ b/zyrarbot/music/history_entry.py
@@ -13,17 +13,11 @@ class HistoryEntry:
     url: str | None = None
     duration: float | None = None
     is_local: bool = False
-    filepath: str | None = None
 
     def is_same_track_as(self, other: HistoryEntry) -> bool:
         """Wpisy uznajemy za ten sam utwór przy zgodnym tytule albo adresie."""
         return self.title == other.title or bool(other.url and self.url == other.url)
 
-    @property
-    def replay_source(self) -> str | None:
-        """Ścieżka lub adres, z którego wpis można odtworzyć ponownie."""
-        return (self.filepath or self.url) if self.is_local else self.url
-
     def to_dict(self) -> dict[str, Any]:
         return {
             "id": self.id,
@@ -31,16 +25,4 @@ class HistoryEntry:
             "url": self.url,
             "duration": self.duration,
             "is_local": self.is_local,
-            "filepath": self.filepath,
         }
-
-    @classmethod
-    def from_dict(cls, data: dict[str, Any]) -> HistoryEntry:
-        return cls(
-            id=str(data.get("id", "")),
-            title=data.get("title", ""),
-            url=data.get("url"),
-            duration=data.get("duration"),
-            is_local=bool(data.get("is_local", False)),
-            filepath=data.get("filepath"),
-        )
diff --git a/zyrarbot/music/music_player.py b/zyrarbot/music/music_player.py
index 4c8c3c2..2f82609 100644
--- a/zyrarbot/music/music_player.py
+++ b/zyrarbot/music/music_player.py
@@ -15,9 +15,9 @@ from zyrarbot.music.history_entry import HistoryEntry
 from zyrarbot.music.loop_mode import LoopMode
 from zyrarbot.music.notification_channel_resolver import NotificationChannelResolver
 from zyrarbot.music.track_embed_factory import TrackEmbedFactory
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
-from zyrarbot.storage.history_repository import HistoryRepository
-from zyrarbot.storage.queue_repository import QueueRepository
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
+from zyrarbot.storage.ports.history import HistoryRepository
+from zyrarbot.storage.ports.queue import QueueRepository
 
 logger = logging.getLogger(__name__)
 
@@ -542,7 +542,6 @@ class MusicPlayer:
                 url=track.display_url,
                 duration=track.duration,
                 is_local=track.is_local,
-                filepath=track.filepath,
             ),
         )
 
diff --git a/zyrarbot/music/notification_channel_resolver.py b/zyrarbot/music/notification_channel_resolver.py
index 68370ca..22d27e2 100644
--- a/zyrarbot/music/notification_channel_resolver.py
+++ b/zyrarbot/music/notification_channel_resolver.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 import discord
 from discord.ext import commands
 
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
 
 
 class NotificationChannelResolver:
diff --git a/zyrarbot/storage/adapters/__init__.py b/zyrarbot/storage/adapters/__init__.py
new file mode 100644
index 0000000..80c5d98
--- /dev/null
+++ b/zyrarbot/storage/adapters/__init__.py
@@ -0,0 +1 @@
+"""Concrete persistence adapters implementing storage ports."""
diff --git a/zyrarbot/storage/adapters/filesystem/__init__.py b/zyrarbot/storage/adapters/filesystem/__init__.py
new file mode 100644
index 0000000..1ed5c99
--- /dev/null
+++ b/zyrarbot/storage/adapters/filesystem/__init__.py
@@ -0,0 +1 @@
+"""Filesystem adapters for uploaded media."""
diff --git a/zyrarbot/storage/uploads_repository.py b/zyrarbot/storage/adapters/filesystem/uploads.py
similarity index 100%
rename from zyrarbot/storage/uploads_repository.py
rename to zyrarbot/storage/adapters/filesystem/uploads.py
diff --git a/zyrarbot/storage/adapters/json/__init__.py b/zyrarbot/storage/adapters/json/__init__.py
new file mode 100644
index 0000000..b77b104
--- /dev/null
+++ b/zyrarbot/storage/adapters/json/__init__.py
@@ -0,0 +1 @@
+"""JSON file storage adapter."""
diff --git a/zyrarbot/storage/json_file_store.py b/zyrarbot/storage/adapters/json/file_store.py
similarity index 100%
rename from zyrarbot/storage/json_file_store.py
rename to zyrarbot/storage/adapters/json/file_store.py
diff --git a/zyrarbot/storage/adapters/postgres/__init__.py b/zyrarbot/storage/adapters/postgres/__init__.py
new file mode 100644
index 0000000..9da0e47
--- /dev/null
+++ b/zyrarbot/storage/adapters/postgres/__init__.py
@@ -0,0 +1 @@
+"""PostgreSQL persistence adapters."""
diff --git a/zyrarbot/storage/adapters/postgres/database.py b/zyrarbot/storage/adapters/postgres/database.py
new file mode 100644
index 0000000..d88aee1
--- /dev/null
+++ b/zyrarbot/storage/adapters/postgres/database.py
@@ -0,0 +1,177 @@
+from __future__ import annotations
+
+import json
+import logging
+from contextlib import contextmanager
+from pathlib import Path
+from typing import Any, Iterator
+
+import psycopg
+
+logger = logging.getLogger(__name__)
+
+
+class PostgresDatabase:
+    """PostgreSQL storage shared by the application's repositories."""
+
+    def __init__(
+        self,
+        host: str,
+        port: int,
+        database: str,
+        user: str,
+        password: str,
+    ):
+        self.connection_options = {
+            "host": host,
+            "port": port,
+            "dbname": database,
+            "user": user,
+            "password": password,
+        }
+        with self.connect() as connection:
+            schema = """
+                CREATE TABLE IF NOT EXISTS guilds (
+                    id BIGINT PRIMARY KEY,
+                    notification_channel_id BIGINT,
+                    default_plays INTEGER
+                );
+                CREATE TABLE IF NOT EXISTS history_entries (
+                    guild_id BIGINT NOT NULL REFERENCES guilds(id) ON DELETE CASCADE,
+                    position INTEGER NOT NULL,
+                    id TEXT PRIMARY KEY,
+                    title TEXT NOT NULL,
+                    url TEXT,
+                    duration DOUBLE PRECISION,
+                    is_local BOOLEAN NOT NULL DEFAULT FALSE,
+                    CONSTRAINT history_entries_guild_position_key UNIQUE (guild_id, position)
+                );
+                CREATE TABLE IF NOT EXISTS queue_snapshots (
+                    guild_id BIGINT PRIMARY KEY REFERENCES guilds(id) ON DELETE CASCADE,
+                    tracks JSONB NOT NULL
+                );
+                CREATE TABLE IF NOT EXISTS migrations (
+                    name TEXT PRIMARY KEY
+                );
+                """
+            for statement in schema.split(";"):
+                if statement.strip():
+                    connection.execute(statement)
+
+    @contextmanager
+    def connect(self) -> Iterator[psycopg.Connection[Any]]:
+        with psycopg.connect(**self.connection_options) as connection:
+            yield connection
+
+    def migrate_legacy_json(self, config_dir: str, first_guild_id: int | None = None) -> None:
+        """Import legacy JSON files once, retaining the source files as a backup."""
+        base = Path(config_dir)
+        with self.connect() as connection:
+            if connection.execute("SELECT 1 FROM migrations WHERE name='json-v1'").fetchone():
+                return
+
+            config_path = base / "config.json"
+            if config_path.exists():
+                data = _read_json(config_path)
+                legacy_default = data.pop("default_plays", None)
+                for guild_key, raw in data.items():
+                    if not str(guild_key).isdigit():
+                        continue
+                    values = raw if isinstance(raw, dict) else {"notification_channel_id": raw}
+                    _upsert_guild(connection, int(guild_key), values)
+                if legacy_default is not None and first_guild_id is not None:
+                    _upsert_guild(connection, first_guild_id, {"default_plays": legacy_default})
+
+            # Per-guild history files take precedence over the old shared file.
+            for path in (base / "history").glob("*.json"):
+                if path.stem.isdigit():
+                    entries = _read_json(path).get("entries", [])
+                    if isinstance(entries, list):
+                        _import_history(connection, int(path.stem), entries)
+            history_path = base / "history.json"
+            if history_path.exists():
+                history = _read_json(history_path)
+                for key, entries in history.items():
+                    if key.isdigit() and isinstance(entries, list):
+                        _import_history(connection, int(key), entries)
+                    elif key == "history" and isinstance(entries, list) and first_guild_id is not None:
+                        _import_history(connection, first_guild_id, entries)
+
+            for path in (base / "queues").glob("*.json"):
+                if path.stem.isdigit():
+                    tracks = _read_json(path).get("tracks", [])
+                    if isinstance(tracks, list) and tracks:
+                        _ensure_guild(connection, int(path.stem))
+                        connection.execute(
+                            "INSERT INTO queue_snapshots(guild_id, tracks) VALUES (%s, %s::jsonb) "
+                            "ON CONFLICT(guild_id) DO NOTHING",
+                            (int(path.stem), json.dumps(tracks, ensure_ascii=False)),
+                        )
+            connection.execute("INSERT INTO migrations(name) VALUES ('json-v1')")
+
+
+def _read_json(path: Path) -> dict[str, Any]:
+    try:
+        value = json.loads(path.read_text(encoding="utf-8"))
+        return value if isinstance(value, dict) else {}
+    except (OSError, ValueError) as error:
+        logger.error("Nie udało się zaimportować %s: %s", path, error)
+        return {}
+
+
+def _ensure_guild(connection: psycopg.Connection[Any], guild_id: int) -> None:
+    connection.execute("INSERT INTO guilds(id) VALUES (%s) ON CONFLICT(id) DO NOTHING", (guild_id,))
+
+
+def _upsert_guild(
+    connection: psycopg.Connection[Any], guild_id: int, values: dict[str, Any]
+) -> None:
+    _ensure_guild(connection, guild_id)
+    for field in ("notification_channel_id", "default_plays"):
+        if values.get(field) is not None:
+            try:
+                value = int(values[field])
+            except (TypeError, ValueError):
+                logger.error("Nieprawidłowa wartość %s serwera %s: %r", field, guild_id, values[field])
+                continue
+            connection.execute(f"UPDATE guilds SET {field}=%s WHERE id=%s", (value, guild_id))
+
+
+def _import_history(
+    connection: psycopg.Connection[Any], guild_id: int, entries: list[Any]
+) -> None:
+    _ensure_guild(connection, guild_id)
+    if connection.execute(
+        "SELECT 1 FROM history_entries WHERE guild_id=%s LIMIT 1", (guild_id,)
+    ).fetchone():
+        return
+    for position, item in enumerate(entries[:50]):
+        if isinstance(item, dict):
+            raw_duration = item.get("duration")
+            try:
+                duration = float(raw_duration) if raw_duration is not None else None
+            except (TypeError, ValueError):
+                logger.warning(
+                    "Nieprawidłowy czas trwania historii serwera %s: %r",
+                    guild_id,
+                    raw_duration,
+                )
+                duration = None
+            is_local = bool(item.get("is_local", False))
+            source = item.get("url")
+            if is_local:
+                source = item.get("filepath") or source
+            connection.execute(
+                "INSERT INTO history_entries "
+                "(guild_id, position, id, title, url, duration, is_local) "
+                "VALUES (%s, %s, %s, %s, %s, %s, %s)",
+                (
+                    guild_id,
+                    position,
+                    str(item.get("id", "")),
+                    str(item.get("title") or ""),
+                    source,
+                    duration,
+                    is_local,
+                ),
+            )
diff --git a/zyrarbot/storage/adapters/postgres/guild_config.py b/zyrarbot/storage/adapters/postgres/guild_config.py
new file mode 100644
index 0000000..dd82b50
--- /dev/null
+++ b/zyrarbot/storage/adapters/postgres/guild_config.py
@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from zyrarbot.storage.adapters.postgres.database import PostgresDatabase
+
+
+class PostgresGuildConfig:
+    """PostgreSQL adapter for the per-server configuration port."""
+
+    def __init__(self, database: PostgresDatabase, fallback_plays: int = 5):
+        self._database = database
+        self._fallback_plays = fallback_plays
+
+    def _ensure(self, guild_id: int) -> None:
+        with self._database.connect() as connection:
+            connection.execute("INSERT INTO guilds(id) VALUES (%s) ON CONFLICT(id) DO NOTHING", (guild_id,))
+
+    def get_notification_channel_id(self, guild_id: int) -> int | None:
+        with self._database.connect() as connection:
+            row = connection.execute(
+                "SELECT notification_channel_id FROM guilds WHERE id=%s", (guild_id,)
+            ).fetchone()
+        return row[0] if row else None
+
+    def set_notification_channel_id(self, guild_id: int, channel_id: int | None) -> None:
+        self._ensure(guild_id)
+        with self._database.connect() as connection:
+            connection.execute(
+                "UPDATE guilds SET notification_channel_id=%s WHERE id=%s", (channel_id, guild_id)
+            )
+
+    def get_default_plays(self, guild_id: int | None = None) -> int:
+        if guild_id is None:
+            return self._fallback_plays
+        with self._database.connect() as connection:
+            row = connection.execute("SELECT default_plays FROM guilds WHERE id=%s", (guild_id,)).fetchone()
+        return int(row[0]) if row and row[0] is not None else self._fallback_plays
+
+    def set_default_plays(self, guild_id: int, value: int) -> None:
+        self._ensure(guild_id)
+        with self._database.connect() as connection:
+            connection.execute("UPDATE guilds SET default_plays=%s WHERE id=%s", (int(value), guild_id))
diff --git a/zyrarbot/storage/adapters/postgres/history.py b/zyrarbot/storage/adapters/postgres/history.py
new file mode 100644
index 0000000..e2f3e24
--- /dev/null
+++ b/zyrarbot/storage/adapters/postgres/history.py
@@ -0,0 +1,68 @@
+from __future__ import annotations
+
+from zyrarbot.music.history_entry import HistoryEntry
+from zyrarbot.storage.adapters.postgres.database import PostgresDatabase
+
+
+class PostgresHistory:
+    """PostgreSQL adapter for the per-guild history port."""
+
+    def __init__(self, database: PostgresDatabase, limit: int = 50):
+        self._database = database
+        self._limit = limit
+
+    def list(self, guild_id: int) -> list[HistoryEntry]:
+        with self._database.connect() as connection:
+            rows = connection.execute(
+                "SELECT id, title, url, duration, is_local "
+                "FROM history_entries WHERE guild_id=%s ORDER BY position",
+                (guild_id,),
+            ).fetchall()
+        entries = [
+            HistoryEntry(
+                id=row[0],
+                title=row[1],
+                url=row[2],
+                duration=row[3],
+                is_local=row[4],
+            )
+            for row in rows
+        ]
+        seen: set[tuple[str, str | None]] = set()
+        unique_entries: list[HistoryEntry] = []
+        for entry in entries:
+            key = (entry.title, entry.url)
+            if key not in seen:
+                seen.add(key)
+                unique_entries.append(entry)
+        return unique_entries
+
+    def add(self, guild_id: int, entry: HistoryEntry) -> None:
+        if not entry.title:
+            return
+        entries = [item for item in self.list(guild_id) if not item.is_same_track_as(entry)]
+        entries.insert(0, entry)
+        entries = entries[: self._limit]
+        with self._database.connect() as connection:
+            connection.execute(
+                "INSERT INTO guilds(id) VALUES (%s) ON CONFLICT(id) DO NOTHING", (guild_id,)
+            )
+            connection.execute("DELETE FROM history_entries WHERE guild_id=%s", (guild_id,))
+            for position, item in enumerate(entries):
+                connection.execute(
+                    "INSERT INTO history_entries "
+                    "(guild_id, position, id, title, url, duration, is_local) "
+                    "VALUES (%s, %s, %s, %s, %s, %s, %s)",
+                    (
+                        guild_id,
+                        position,
+                        item.id,
+                        item.title,
+                        item.url,
+                        item.duration,
+                        item.is_local,
+                    ),
+                )
+
+    def find(self, guild_id: int, entry_id: str) -> HistoryEntry | None:
+        return next((item for item in self.list(guild_id) if item.id == entry_id), None)
diff --git a/zyrarbot/storage/adapters/postgres/persistence.py b/zyrarbot/storage/adapters/postgres/persistence.py
new file mode 100644
index 0000000..309c4f0
--- /dev/null
+++ b/zyrarbot/storage/adapters/postgres/persistence.py
@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import os
+
+from zyrarbot.storage.adapters.postgres.database import PostgresDatabase
+from zyrarbot.storage.adapters.postgres.guild_config import PostgresGuildConfig
+from zyrarbot.storage.adapters.postgres.history import PostgresHistory
+from zyrarbot.storage.adapters.postgres.queue import PostgresQueue
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
+from zyrarbot.storage.ports.history import HistoryRepository
+from zyrarbot.storage.ports.queue import QueueRepository
+
+
+class PostgresPersistence:
+    """Composition of PostgreSQL adapters implementing the storage ports."""
+
+    def __init__(self, config_dir: str, default_plays: int, history_limit: int):
+        self.database = PostgresDatabase(
+            host=os.environ.get("POSTGRES_HOST", "localhost"),
+            port=int(os.environ.get("POSTGRES_PORT", "5432")),
+            database=os.environ.get("POSTGRES_DB", "zyrarbot"),
+            user=os.environ.get("POSTGRES_USER", "zyrarbot"),
+            password=os.environ.get("POSTGRES_PASSWORD", "zyrarbot"),
+        )
+        self.config: GuildConfigRepository = PostgresGuildConfig(
+            self.database, fallback_plays=default_plays
+        )
+        self.history: HistoryRepository = PostgresHistory(
+            self.database, limit=history_limit
+        )
+        self.queues: QueueRepository = PostgresQueue(self.database)
+        self._config_dir = config_dir
+
+    def migrate_legacy(self, config_dir: str, first_guild_id: int) -> None:
+        self.database.migrate_legacy_json(config_dir or self._config_dir, first_guild_id)
diff --git a/zyrarbot/storage/adapters/postgres/queue.py b/zyrarbot/storage/adapters/postgres/queue.py
new file mode 100644
index 0000000..45f314e
--- /dev/null
+++ b/zyrarbot/storage/adapters/postgres/queue.py
@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+import json
+from typing import Any
+
+from zyrarbot.storage.adapters.postgres.database import PostgresDatabase
+
+
+class PostgresQueue:
+    """PostgreSQL adapter for per-guild queue snapshots."""
+
+    def __init__(self, database: PostgresDatabase):
+        self._database = database
+
+    def save(self, guild_id: int, tracks: list[dict[str, Any]]) -> None:
+        if not tracks:
+            return
+        with self._database.connect() as connection:
+            connection.execute(
+                "INSERT INTO guilds(id) VALUES (%s) ON CONFLICT(id) DO NOTHING", (guild_id,)
+            )
+            connection.execute(
+                "INSERT INTO queue_snapshots(guild_id, tracks) VALUES (%s, %s::jsonb) "
+                "ON CONFLICT(guild_id) DO UPDATE SET tracks=excluded.tracks",
+                (guild_id, json.dumps(tracks, ensure_ascii=False)),
+            )
+
+    def load(self, guild_id: int) -> list[dict[str, Any]]:
+        with self._database.connect() as connection:
+            row = connection.execute(
+                "SELECT tracks FROM queue_snapshots WHERE guild_id=%s", (guild_id,)
+            ).fetchone()
+        if not row:
+            return []
+        tracks = row[0]
+        return tracks if isinstance(tracks, list) else []
+
+    def exists(self, guild_id: int) -> bool:
+        return bool(self.load(guild_id))
diff --git a/zyrarbot/storage/guild_config_repository.py b/zyrarbot/storage/guild_config_repository.py
deleted file mode 100644
index 67c3a1d..0000000
--- a/zyrarbot/storage/guild_config_repository.py
+++ /dev/null
@@ -1,92 +0,0 @@
-from __future__ import annotations
-
-import logging
-
-from zyrarbot.storage.json_file_store import JsonFileStore
-
-logger = logging.getLogger(__name__)
-
-
-class GuildConfigRepository:
-    """Dostęp do konfiguracji przechowywanej osobno dla każdego serwera."""
-
-    DEFAULT_PLAYS_KEY = "default_plays"
-
-    def __init__(self, store: JsonFileStore, fallback_plays: int = 5):
-        self._store = store
-        self._fallback_plays = fallback_plays
-
-    def _guild_config(self, guild_id: int) -> dict[str, int | None]:
-        data = self._store.read()
-        key = str(guild_id)
-        value = data.get(key)
-
-        # Migrate the old format {"guild_id": channel_id} lazily.
-        if isinstance(value, dict):
-            if self.DEFAULT_PLAYS_KEY in data:
-                try:
-                    value.setdefault("default_plays", int(data[self.DEFAULT_PLAYS_KEY]))
-                except (TypeError, ValueError):
-                    logger.error(
-                        "Nieprawidłowa wartość %s: %r",
-                        self.DEFAULT_PLAYS_KEY,
-                        data[self.DEFAULT_PLAYS_KEY],
-                    )
-                data.pop(self.DEFAULT_PLAYS_KEY, None)
-                data[key] = value
-                self._store.write(data)
-            return value
-        config: dict[str, int | None] = {}
-        if value is not None:
-            try:
-                config["notification_channel_id"] = int(value)
-            except (TypeError, ValueError):
-                logger.error(
-                    "Nieprawidłowe ID kanału w konfiguracji serwera %s: %r", guild_id, value
-                )
-
-        # The old default was global. The first guild that is accessed owns it.
-        legacy_default = data.get(self.DEFAULT_PLAYS_KEY)
-        if legacy_default is not None:
-            try:
-                config["default_plays"] = int(legacy_default)
-            except (TypeError, ValueError):
-                logger.error("Nieprawidłowa wartość %s: %r", self.DEFAULT_PLAYS_KEY, legacy_default)
-            data.pop(self.DEFAULT_PLAYS_KEY, None)
-        data[key] = config
-        self._store.write(data)
-        return config
-
-    def migrate_legacy(self, guild_id: int) -> None:
-        """Assign the old global configuration to the first known guild."""
-        self._guild_config(guild_id)
-
-    def get_notification_channel_id(self, guild_id: int) -> int | None:
-        value = self._guild_config(guild_id).get("notification_channel_id")
-        try:
-            return int(value) if value is not None else None
-        except (TypeError, ValueError):
-            logger.error("Nieprawidłowe ID kanału w konfiguracji serwera %s: %r", guild_id, value)
-            return None
-
-    def set_notification_channel_id(self, guild_id: int, channel_id: int | None) -> None:
-        config = self._guild_config(guild_id)
-        config["notification_channel_id"] = channel_id
-        self._store.set(str(guild_id), config)
-
-    def get_default_plays(self, guild_id: int | None = None) -> int:
-        if guild_id is None:
-            return self._fallback_plays
-        value = self._guild_config(guild_id).get("default_plays")
-        if value is None:
-            return self._fallback_plays
-        try:
-            return int(value)
-        except (TypeError, ValueError):
-            logger.error("Nieprawidłowa wartość %s: %r", self.DEFAULT_PLAYS_KEY, value)
-            return self._fallback_plays
-
-    def set_default_plays(self, guild_id: int, value: int) -> None:
-        config = self._guild_config(guild_id)
-        config["default_plays"] = int(value)
-        self._store.set(str(guild_id), config)
diff --git a/zyrarbot/storage/history_repository.py b/zyrarbot/storage/history_repository.py
deleted file mode 100644
index f19966d..0000000
--- a/zyrarbot/storage/history_repository.py
+++ /dev/null
@@ -1,75 +0,0 @@
-from __future__ import annotations
-
-import os
-
-from zyrarbot.music.history_entry import HistoryEntry
-from zyrarbot.storage.json_file_store import JsonFileStore
-
-
-class HistoryRepository:
-    """Historia odtwarzania w osobnym pliku dla każdego serwera."""
-
-    def __init__(self, store: JsonFileStore, limit: int = 50):
-        self._store = store
-        self._limit = limit
-        self._cache: dict[int, list[HistoryEntry]] = {}
-        self._guild_stores: dict[int, JsonFileStore] = {}
-        self._legacy_migrated = False
-
-    def _guild_store(self, guild_id: int) -> JsonFileStore:
-        if guild_id not in self._guild_stores:
-            directory = os.path.join(os.path.dirname(self._store.path), "history")
-            path = os.path.join(directory, f"{guild_id}.json")
-            self._guild_stores[guild_id] = JsonFileStore(path)
-        return self._guild_stores[guild_id]
-
-    def migrate_legacy(self, first_guild_id: int) -> None:
-        """Move the old shared history file into one file per guild."""
-        if self._legacy_migrated:
-            return
-
-        legacy_data = self._store.read()
-        for key, entries in legacy_data.items():
-            if key == "history" and isinstance(entries, list):
-                self._write_entries(first_guild_id, entries)
-            elif key.isdigit() and isinstance(entries, list):
-                self._write_entries(int(key), entries)
-        self._legacy_migrated = True
-
-    def list(self, guild_id: int) -> list[HistoryEntry]:
-        if guild_id not in self._cache:
-            self._cache[guild_id] = self._load(guild_id)
-        return self._cache[guild_id]
-
-    def add(self, guild_id: int, entry: HistoryEntry) -> None:
-        if not entry.title:
-            return
-        entries = [item for item in self.list(guild_id) if not item.is_same_track_as(entry)]
-        entries.insert(0, entry)
-        self._cache[guild_id] = entries[: self._limit]
-        self._persist(guild_id)
-
-    def find(self, guild_id: int, entry_id: str) -> HistoryEntry | None:
-        return next((item for item in self.list(guild_id) if item.id == entry_id), None)
-
-    def _load(self, guild_id: int) -> list[HistoryEntry]:
-        raw_entries = self._guild_store(guild_id).get("entries", [])
-        raw_entries = raw_entries or []
-        entries: list[HistoryEntry] = []
-        seen: set[tuple[str, str | None]] = set()
-        for raw in raw_entries:
-            entry = HistoryEntry.from_dict(raw)
-            key = (entry.title, entry.url)
-            if key in seen:
-                continue
-            seen.add(key)
-            entries.append(entry)
-        return entries
-
-    def _persist(self, guild_id: int) -> None:
-        self._guild_store(guild_id).set(
-            "entries", [entry.to_dict() for entry in self._cache.get(guild_id, [])]
-        )
-
-    def _write_entries(self, guild_id: int, entries: list[dict]) -> None:
-        self._guild_store(guild_id).set("entries", entries[: self._limit])
diff --git a/zyrarbot/storage/ports/__init__.py b/zyrarbot/storage/ports/__init__.py
new file mode 100644
index 0000000..c350e0b
--- /dev/null
+++ b/zyrarbot/storage/ports/__init__.py
@@ -0,0 +1 @@
+"""Ports describing persistence operations used by the application."""
diff --git a/zyrarbot/storage/ports/guild_config.py b/zyrarbot/storage/ports/guild_config.py
new file mode 100644
index 0000000..9cf71fe
--- /dev/null
+++ b/zyrarbot/storage/ports/guild_config.py
@@ -0,0 +1,13 @@
+from __future__ import annotations
+
+from typing import Protocol
+
+
+class GuildConfigRepository(Protocol):
+    def get_notification_channel_id(self, guild_id: int) -> int | None: ...
+
+    def set_notification_channel_id(self, guild_id: int, channel_id: int | None) -> None: ...
+
+    def get_default_plays(self, guild_id: int | None = None) -> int: ...
+
+    def set_default_plays(self, guild_id: int, value: int) -> None: ...
diff --git a/zyrarbot/storage/ports/history.py b/zyrarbot/storage/ports/history.py
new file mode 100644
index 0000000..892fe9b
--- /dev/null
+++ b/zyrarbot/storage/ports/history.py
@@ -0,0 +1,13 @@
+from __future__ import annotations
+
+from typing import Protocol
+
+from zyrarbot.music.history_entry import HistoryEntry
+
+
+class HistoryRepository(Protocol):
+    def list(self, guild_id: int) -> list[HistoryEntry]: ...
+
+    def add(self, guild_id: int, entry: HistoryEntry) -> None: ...
+
+    def find(self, guild_id: int, entry_id: str) -> HistoryEntry | None: ...
diff --git a/zyrarbot/storage/ports/legacy_data_migration.py b/zyrarbot/storage/ports/legacy_data_migration.py
new file mode 100644
index 0000000..d1b0b55
--- /dev/null
+++ b/zyrarbot/storage/ports/legacy_data_migration.py
@@ -0,0 +1,7 @@
+from __future__ import annotations
+
+from typing import Protocol
+
+
+class LegacyDataMigration(Protocol):
+    def migrate_legacy(self, config_dir: str, first_guild_id: int) -> None: ...
diff --git a/zyrarbot/storage/ports/persistence.py b/zyrarbot/storage/ports/persistence.py
new file mode 100644
index 0000000..8e2bedb
--- /dev/null
+++ b/zyrarbot/storage/ports/persistence.py
@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+from typing import Protocol
+
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
+from zyrarbot.storage.ports.history import HistoryRepository
+from zyrarbot.storage.ports.legacy_data_migration import LegacyDataMigration
+from zyrarbot.storage.ports.queue import QueueRepository
+
+
+class Persistence(LegacyDataMigration, Protocol):
+    config: GuildConfigRepository
+    history: HistoryRepository
+    queues: QueueRepository
diff --git a/zyrarbot/storage/ports/queue.py b/zyrarbot/storage/ports/queue.py
new file mode 100644
index 0000000..55c2dc4
--- /dev/null
+++ b/zyrarbot/storage/ports/queue.py
@@ -0,0 +1,11 @@
+from __future__ import annotations
+
+from typing import Any, Protocol
+
+
+class QueueRepository(Protocol):
+    def save(self, guild_id: int, tracks: list[dict[str, Any]]) -> None: ...
+
+    def load(self, guild_id: int) -> list[dict[str, Any]]: ...
+
+    def exists(self, guild_id: int) -> bool: ...
diff --git a/zyrarbot/storage/ports/uploads.py b/zyrarbot/storage/ports/uploads.py
new file mode 100644
index 0000000..d527091
--- /dev/null
+++ b/zyrarbot/storage/ports/uploads.py
@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from typing import BinaryIO, Protocol
+
+from zyrarbot.storage.upload_file_info import UploadFileInfo
+
+
+class UploadsRepository(Protocol):
+    @property
+    def directory(self) -> str: ...
+
+    def is_supported_filename(self, filename: str) -> bool: ...
+
+    def resolve(self, filename: str, guild_id: int | None = None) -> str: ...
+
+    def exists(self, filename: str, guild_id: int | None = None) -> bool: ...
+
+    def list(self, guild_id: int | None = None) -> list[UploadFileInfo]: ...
+
+    def search(self, query: str, limit: int = 25, guild_id: int | None = None) -> list[str]: ...
+
+    def save(self, filename: str, source: BinaryIO, guild_id: int | None = None) -> str: ...
+
+    def delete(self, filename: str, guild_id: int | None = None) -> bool: ...
+
+    def touch(self, filename: str, guild_id: int | None = None) -> None: ...
+
+    def migrate_legacy(self, guild_id: int) -> None: ...
diff --git a/zyrarbot/storage/queue_repository.py b/zyrarbot/storage/queue_repository.py
deleted file mode 100644
index 84067ee..0000000
--- a/zyrarbot/storage/queue_repository.py
+++ /dev/null
@@ -1,33 +0,0 @@
-from __future__ import annotations
-
-import os
-from typing import Any
-
-from zyrarbot.storage.json_file_store import JsonFileStore
-
-
-class QueueRepository:
-    """Persists the last queue snapshot in a separate file per Discord guild."""
-
-    def __init__(self, directory: str):
-        self._directory = directory
-        self._stores: dict[int, JsonFileStore] = {}
-
-    def _store(self, guild_id: int) -> JsonFileStore:
-        if guild_id not in self._stores:
-            self._stores[guild_id] = JsonFileStore(
-                os.path.join(self._directory, f"{guild_id}.json")
-            )
-        return self._stores[guild_id]
-
-    def save(self, guild_id: int, tracks: list[dict[str, Any]]) -> None:
-        if not tracks:
-            return
-        self._store(guild_id).set("tracks", tracks)
-
-    def load(self, guild_id: int) -> list[dict[str, Any]]:
-        tracks = self._store(guild_id).get("tracks", [])
-        return tracks if isinstance(tracks, list) else []
-
-    def exists(self, guild_id: int) -> bool:
-        return bool(self.load(guild_id))
diff --git a/zyrarbot/ui/api/dependencies.py b/zyrarbot/ui/api/dependencies.py
index b81f414..d9f0f03 100644
--- a/zyrarbot/ui/api/dependencies.py
+++ b/zyrarbot/ui/api/dependencies.py
@@ -6,8 +6,8 @@ from fastapi import HTTPException, Query, Request, WebSocket
 from zyrarbot.audio.track_factory import TrackFactory
 from zyrarbot.music.music_player import MusicPlayer
 from zyrarbot.settings import Settings
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
+from zyrarbot.storage.ports.uploads import UploadsRepository
 from zyrarbot.ui.api.connection_manager import ConnectionManager
 from zyrarbot.ui.api.status_broadcaster import StatusBroadcaster
 from zyrarbot.ui.api.status_service import StatusService
diff --git a/zyrarbot/ui/api/factory.py b/zyrarbot/ui/api/factory.py
index 839e9b5..3acbf42 100644
--- a/zyrarbot/ui/api/factory.py
+++ b/zyrarbot/ui/api/factory.py
@@ -5,8 +5,8 @@ from fastapi import FastAPI
 from zyrarbot.audio.track_factory import TrackFactory
 from zyrarbot.music.music_player import MusicPlayer
 from zyrarbot.settings import Settings
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
+from zyrarbot.storage.ports.uploads import UploadsRepository
 from zyrarbot.ui.api.connection_manager import ConnectionManager
 from zyrarbot.ui.api.routers import (
     playback_router,
diff --git a/zyrarbot/ui/api/routers/playback_router.py b/zyrarbot/ui/api/routers/playback_router.py
index 95e6bdd..bb0b2a8 100644
--- a/zyrarbot/ui/api/routers/playback_router.py
+++ b/zyrarbot/ui/api/routers/playback_router.py
@@ -9,7 +9,7 @@ from fastapi import APIRouter, Depends, HTTPException
 from zyrarbot.audio.track_factory import TrackFactory
 from zyrarbot.music.loop_mode import LoopMode
 from zyrarbot.music.music_player import MusicPlayer
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.uploads import UploadsRepository
 from zyrarbot.ui.api.dependencies import (
     get_active_guild,
     get_broadcaster,
diff --git a/zyrarbot/ui/api/routers/uploads_router.py b/zyrarbot/ui/api/routers/uploads_router.py
index 046e6a1..c4482c1 100644
--- a/zyrarbot/ui/api/routers/uploads_router.py
+++ b/zyrarbot/ui/api/routers/uploads_router.py
@@ -8,7 +8,7 @@ import discord
 from fastapi import APIRouter, Depends, File, HTTPException, UploadFile
 
 from zyrarbot.audio.media_probe import MediaProbe
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.uploads import UploadsRepository
 from zyrarbot.ui.api.dependencies import get_active_guild, get_uploads
 
 router = APIRouter(prefix="/api", tags=["uploads"])
diff --git a/zyrarbot/ui/api/routers/voice_router.py b/zyrarbot/ui/api/routers/voice_router.py
index 14e31f4..31b8e65 100644
--- a/zyrarbot/ui/api/routers/voice_router.py
+++ b/zyrarbot/ui/api/routers/voice_router.py
@@ -5,7 +5,7 @@ from fastapi import APIRouter, Depends, HTTPException
 
 from zyrarbot.music.music_player import MusicPlayer
 from zyrarbot.music.notification_channel_resolver import NotificationChannelResolver
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
 from zyrarbot.ui.api.dependencies import (
     get_active_guild,
     get_broadcaster,
diff --git a/zyrarbot/ui/bot/client.py b/zyrarbot/ui/bot/client.py
index 5714130..71b113a 100644
--- a/zyrarbot/ui/bot/client.py
+++ b/zyrarbot/ui/bot/client.py
@@ -12,9 +12,10 @@ from discord.ext import commands
 from zyrarbot.audio.track_factory import TrackFactory
 from zyrarbot.music.music_player import MusicPlayer
 from zyrarbot.settings import Settings
-from zyrarbot.storage.guild_config_repository import GuildConfigRepository
-from zyrarbot.storage.history_repository import HistoryRepository
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.guild_config import GuildConfigRepository
+from zyrarbot.storage.ports.history import HistoryRepository
+from zyrarbot.storage.ports.legacy_data_migration import LegacyDataMigration
+from zyrarbot.storage.ports.uploads import UploadsRepository
 from zyrarbot.ui.bot.cogs.control_cog import ControlCog
 from zyrarbot.ui.bot.cogs.playback_cog import PlaybackCog
 from zyrarbot.ui.bot.cogs.player_cog import PlayerCog
@@ -39,6 +40,7 @@ class MusicBot(commands.Bot):
         uploads: UploadsRepository,
         config: GuildConfigRepository,
         history: HistoryRepository,
+        migration: LegacyDataMigration,
         restart_callback: Callable[[], None] | None = None,
     ):
         intents = discord.Intents.default()
@@ -51,6 +53,7 @@ class MusicBot(commands.Bot):
         self.uploads = uploads
         self.config = config
         self.history = history
+        self.migration = migration
         self.player: MusicPlayer | None = None
         self._restart_callback = restart_callback
         self._is_closing = False
@@ -168,8 +171,7 @@ class MusicBot(commands.Bot):
         if self.guilds:
             first_guild_id = self.guilds[0].id
             self.uploads.migrate_legacy(first_guild_id)
-            self.config.migrate_legacy(first_guild_id)
-            self.history.migrate_legacy(first_guild_id)
+            self.migration.migrate_legacy(self.settings.config_dir, first_guild_id)
 
         # Jeśli po uruchomieniu bot z jakiegoś powodu znajduje się w kanale głosowym,
         # odłącz go, aby stan był czysty i zgodny z API (np. po awaryjnym restarcie).
diff --git a/zyrarbot/ui/bot/cogs/playback_cog.py b/zyrarbot/ui/bot/cogs/playback_cog.py
index 7526ccf..01a31c8 100644
--- a/zyrarbot/ui/bot/cogs/playback_cog.py
+++ b/zyrarbot/ui/bot/cogs/playback_cog.py
@@ -12,7 +12,7 @@ from discord.ext import commands
 from zyrarbot.audio.media_probe import MediaProbe
 from zyrarbot.audio.track_factory import TrackFactory
 from zyrarbot.music.music_player import MusicPlayer
-from zyrarbot.storage.uploads_repository import UploadsRepository
+from zyrarbot.storage.ports.uploads import UploadsRepository
 from zyrarbot.ui.bot.cogs.common import MusicCogBase
 from zyrarbot.ui.bot.discord_theme import BRAND_PURPLE, message_embed
 
@@ -264,8 +264,8 @@ class PlaybackCog(MusicCogBase, name="Playback"):
             return
         try:
             if entry.is_local:
-                filepath = entry.replay_source or ""
-                if not self._uploads.exists(filepath, guild_id):
+                source = entry.url or ""
+                if not self._uploads.exists(source, guild_id):
                     await interaction.followup.send(
                         embed=message_embed(
                             "Historia", "Plik lokalny z historii już nie istnieje na serwerze."
@@ -274,7 +274,7 @@ class PlaybackCog(MusicCogBase, name="Playback"):
                     )
                     return
                 track = await self._tracks.from_file(
-                    self._uploads.resolve(filepath, guild_id), title=entry.title
+                    self._uploads.resolve(source, guild_id), title=entry.title
                 )
             else:
                 track = await self._tracks.from_url(entry.url or "", loop=self.bot.loop)