diff --git a/libs/community/langchain_community/retrievers/google_vertex_ai_search.py b/libs/community/langchain_community/retrievers/google_vertex_ai_search.py
index 41625823567..109f0385f0c 100644
--- a/libs/community/langchain_community/retrievers/google_vertex_ai_search.py
+++ b/libs/community/langchain_community/retrievers/google_vertex_ai_search.py
@@ -15,12 +15,7 @@ from langchain_community.utilities.vertexai import get_client_info
 
 if TYPE_CHECKING:
     from google.api_core.client_options import ClientOptions
-    from google.cloud.discoveryengine_v1beta import (
-        ConversationalSearchServiceClient,
-        SearchRequest,
-        SearchResult,
-        SearchServiceClient,
-    )
+    from google.cloud.discoveryengine_v1beta import SearchRequest, SearchResult
 
 
 class _BaseGoogleVertexAISearchRetriever(BaseModel):
@@ -243,7 +238,8 @@ class GoogleVertexAISearchRetriever(BaseRetriever, _BaseGoogleVertexAISearchRetr
         Search will be based on the corrected query if found.
     """
 
-    _client: SearchServiceClient
+    # type is SearchServiceClient but can't be set due to optional imports
+    _client: Any
     _serving_config: str
 
     model_config = ConfigDict(
@@ -408,7 +404,8 @@ class GoogleVertexAIMultiTurnSearchRetriever(
     conversation_id: str = "-"
     """Vertex AI Search Conversation ID."""
 
-    _client: ConversationalSearchServiceClient
+    # type is ConversationalSearchServiceClient but can't be set due to optional imports
+    _client: Any
     _serving_config: str
 
     model_config = ConfigDict(
diff --git a/libs/community/pyproject.toml b/libs/community/pyproject.toml
index d622bf0c6f3..dbc4617541f 100644
--- a/libs/community/pyproject.toml
+++ b/libs/community/pyproject.toml
@@ -65,6 +65,9 @@ markers = [
     "compile: mark placeholder test used to compile integration tests without running them",
 ]
 asyncio_mode = "auto"
+filterwarnings = [
+    "ignore::langchain_core._api.deprecation.LangChainDeprecationWarning:test",
+]
 
 [tool.poetry.group.test]
 optional = true
diff --git a/libs/community/tests/unit_tests/load/test_serializable.py b/libs/community/tests/unit_tests/load/test_serializable.py
index f86d2f70739..35ea4b169d7 100644
--- a/libs/community/tests/unit_tests/load/test_serializable.py
+++ b/libs/community/tests/unit_tests/load/test_serializable.py
@@ -120,6 +120,11 @@ def test_serializable_mapping() -> None:
             "bedrock",
             "ChatBedrock",
         ),
+        ("langchain_google_genai", "chat_models", "ChatGoogleGenerativeAI"): (
+            "langchain_google_genai",
+            "chat_models",
+            "ChatGoogleGenerativeAI",
+        ),
     }
     serializable_modules = import_all_modules("langchain")
 
diff --git a/libs/community/tests/unit_tests/test_dependencies.py b/libs/community/tests/unit_tests/test_dependencies.py
index 47239c945d2..8fe12f140f1 100644
--- a/libs/community/tests/unit_tests/test_dependencies.py
+++ b/libs/community/tests/unit_tests/test_dependencies.py
@@ -93,6 +93,9 @@ def test_test_group_dependencies(poetry_conf: Mapping[str, Any]) -> None:
             "responses",
             "syrupy",
             "requests-mock",
+            # TODO: Hack to get around cffi 1.17.1 not working with py3.9, remove when
+            # fix is released.
+            "cffi",
         ]
     )