diff --git a/aiocache/decorators.py b/aiocache/decorators.py
index 92e4fe93..86499b80 100644
--- a/aiocache/decorators.py
+++ b/aiocache/decorators.py
@@ -82,7 +82,7 @@ def __call__(self, f):
             self.cache = caches.get(self.alias)
             for arg in ("serializer", "namespace", "plugins"):
                 if getattr(self, f'_{arg}', None) is not None:
-                    logger.warning(f"Using cache alias; ignoring '{arg}' argument.")
+                    logger.warning(f"Using cache alias; ignoring {arg!r} argument.")
         else:
             self.cache = _get_cache(
                 cache=self._cache,
@@ -310,7 +310,7 @@ def __call__(self, f):
             self.cache = caches.get(self.alias)
             for arg in ("serializer", "namespace", "plugins"):
                 if getattr(self, f'_{arg}', None) is not None:
-                    logger.warning(f"Using cache alias; ignoring '{arg}' argument.")
+                    logger.warning(f"Using cache alias; ignoring {arg!r} argument.")
         else:
             self.cache = _get_cache(
                 cache=self._cache,
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1a9e2dff..af99a537 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 
 flake8==6.0.0
 flake8-bandit==4.1.1
-flake8-bugbear==22.12.6
+flake8-bugbear==23.1.20
 flake8-import-order==0.18.2
 flake8-requirements==1.7.6
 mypy==0.991; implementation_name=="cpython"
diff --git a/tests/ut/conftest.py b/tests/ut/conftest.py
index c600e947..0adcd1f4 100644
--- a/tests/ut/conftest.py
+++ b/tests/ut/conftest.py
@@ -29,7 +29,7 @@ def reset_caches():
 
 @pytest.fixture
 def mock_cache(mocker):
-    return create_autospec(BaseCache, instance=True)
+    return create_autospec(BaseCache())
 
 
 @pytest.fixture
diff --git a/tests/ut/test_decorators.py b/tests/ut/test_decorators.py
index b1a49ffa..4b0ebdab 100644
--- a/tests/ut/test_decorators.py
+++ b/tests/ut/test_decorators.py
@@ -151,8 +151,8 @@ async def test_calls_fn_set_when_get_none(self, mocker, decorator, decorator_cal
 
     async def test_calls_fn_raises_exception(self, decorator, decorator_call):
         decorator.cache.get.return_value = None
-        stub.side_effect = Exception()
-        with pytest.raises(Exception):
+        stub.side_effect = Exception("foo")
+        with pytest.raises(Exception, match="foo"):
             assert await decorator_call()
 
     async def test_cache_write_waits_for_future(self, decorator, decorator_call):
@@ -284,8 +284,8 @@ async def test_calls_get_and_returns(self, decorator, decorator_call):
 
     async def test_calls_fn_raises_exception(self, decorator, decorator_call):
         decorator.cache.get.return_value = None
-        stub.side_effect = Exception()
-        with pytest.raises(Exception):
+        stub.side_effect = Exception("foo")
+        with pytest.raises(Exception, match="foo"):
             assert await decorator_call()
 
     async def test_calls_redlock(self, decorator, decorator_call):
@@ -492,8 +492,8 @@ async def test_calls_fn_with_only_missing_keys(self, mocker, decorator, decorato
 
     async def test_calls_fn_raises_exception(self, decorator, decorator_call):
         decorator.cache.multi_get.return_value = [None]
-        stub_dict.side_effect = Exception()
-        with pytest.raises(Exception):
+        stub_dict.side_effect = Exception("foo")
+        with pytest.raises(Exception, match="foo"):
             assert await decorator_call(keys=[])
 
     async def test_cache_read_disabled(self, decorator, decorator_call):