diff --git a/google/cloud/alloydbconnector/async_connector.py b/google/cloud/alloydbconnector/async_connector.py
index 96c265c8..d834f262 100644
--- a/google/cloud/alloydbconnector/async_connector.py
+++ b/google/cloud/alloydbconnector/async_connector.py
@@ -252,7 +252,7 @@ async def _remove_cached(self, instance_uri: str) -> None:
         cache = self._cache.pop(instance_uri)
         await cache.close()
 
-    async def __aenter__(self) -> Any:
+    async def __aenter__(self) -> AsyncConnector:
         """Enter async context manager by returning Connector object"""
         return self
 
diff --git a/google/cloud/alloydbconnector/psycopg.py b/google/cloud/alloydbconnector/psycopg.py
index 8e91c076..bf25d927 100644
--- a/google/cloud/alloydbconnector/psycopg.py
+++ b/google/cloud/alloydbconnector/psycopg.py
@@ -43,7 +43,7 @@ def _proxy(local: socket.socket, remote: "ssl.SSLSocket") -> None:
         remote: The SSL socket connected to the AlloyDB proxy server.
     """
 
-    def forward(src: Any, dst: Any) -> None:
+    def forward(src: socket.socket, dst: socket.socket) -> None:
         buf = bytearray(_CHUNK_SIZE)
         view = memoryview(buf)
         try:
diff --git a/pyproject.toml b/pyproject.toml
index bf2ede8f..b01657d1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -115,11 +115,8 @@ select = [
     "ANN", # flake8-annotations
 ]
 ignore = [
-    "E203",
-    "E231",
-    "E266",
-    "E501",
-    "ANN401",
+    "ANN401", # Any is needed for pass-through **kwargs
+    "E501",   # line too long — enforced by ruff format
 ]
 
 [tool.ruff.lint.per-file-ignores]