diff --git a/tests/conftest.py b/tests/conftest.py
index f61c1e94a66..7bf1dc5a6af 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -20,6 +20,7 @@
 from freqtrade.exchange import Exchange, timeframe_to_minutes, timeframe_to_seconds
 from freqtrade.freqtradebot import FreqtradeBot
 from freqtrade.persistence import LocalTrade, Order, Trade, init_db
+from freqtrade.persistence.custom_data import _CustomData
 from freqtrade.resolvers import ExchangeResolver
 from freqtrade.system import set_mp_start_method
 from freqtrade.util import dt_now, dt_ts
@@ -581,6 +582,21 @@ def patch_coingecko(mocker) -> None:
     )
 
 
+@pytest.fixture(autouse=True)
+def dispose_db_engine():
+    """
+    Dispose the database engine after each test to release its pooled connection.
+    Without this, leaked connections accumulate and are finalized at random points
+    by the GC, emitting ResourceWarnings in unrelated tests.
+    """
+    yield
+    if (session := getattr(Trade, "session", None)) is not None:
+        bind = session.get_bind()
+        session.remove()
+        _CustomData.session.remove()
+        bind.dispose()
+
+
 @pytest.fixture(scope="function")
 def init_persistence(default_conf):
     init_db(default_conf["db_url"])
diff --git a/tests/data/test_entryexitanalysis.py b/tests/data/test_entryexitanalysis.py
index 63ac3c1a3b9..8e4c43d55e6 100644
--- a/tests/data/test_entryexitanalysis.py
+++ b/tests/data/test_entryexitanalysis.py
@@ -13,7 +13,7 @@
 
 
 @pytest.fixture(autouse=True)
-def entryexitanalysis_cleanup() -> None:
+def entryexitanalysis_cleanup():
     yield None
 
     Backtesting.cleanup()
diff --git a/tests/strategy/test_interface.py b/tests/strategy/test_interface.py
index ec72f7fb273..cc3c97b7c40 100644
--- a/tests/strategy/test_interface.py
+++ b/tests/strategy/test_interface.py
@@ -1150,7 +1150,10 @@ def test_pandas_warning_direct(ohlcv_history, function, raises, recwarn):
         # Fixed in 2.2.x
         getattr(_STRATEGY, function)(df, {"pair": "ETH/BTC"})
     else:
-        assert len(recwarn) == 0, f"warnings: {', '.join(str(w) for w in recwarn.list)}"
+        # Ignore ResourceWarnings - the GC may clean up resources from
+        # unrelated tests while this test is running.
+        warnings = [w for w in recwarn.list if not issubclass(w.category, ResourceWarning)]
+        assert len(warnings) == 0, f"warnings: {', '.join(str(w) for w in warnings)}"
 
         getattr(_STRATEGY, function)(df, {"pair": "ETH/BTC"})
 
@@ -1159,4 +1162,7 @@ def test_pandas_warning_through_analyze_pair(ohlcv_history, mocker, recwarn):
     recwarn.clear()
     mocker.patch.object(_STRATEGY.dp, "ohlcv", return_value=ohlcv_history)
     _STRATEGY.analyze_pair("ETH/BTC")
-    assert len(recwarn) == 0, f"warnings: {', '.join(str(w) for w in recwarn.list)}"
+    # Ignore ResourceWarnings - the GC may clean up resources from
+    # unrelated tests while this test is running.
+    warnings = [w for w in recwarn.list if not issubclass(w.category, ResourceWarning)]
+    assert len(warnings) == 0, f"warnings: {', '.join(str(w) for w in warnings)}"