diff --git a/pkgs/development/python-modules/langchain-community/default.nix b/pkgs/development/python-modules/langchain-community/default.nix
index cccbca601e32a..50b3992a9b610 100644
--- a/pkgs/development/python-modules/langchain-community/default.nix
+++ b/pkgs/development/python-modules/langchain-community/default.nix
@@ -53,6 +53,7 @@ buildPythonPackage rec {
   build-system = [ poetry-core ];
 
   pythonRelaxDeps = [
+    "numpy"
     "pydantic-settings"
     "tenacity"
   ];
@@ -107,6 +108,12 @@ buildPythonPackage rec {
     # See https://github.com/NixOS/nixpkgs/pull/326337 and https://github.com/wasmerio/wasmer-python/issues/778
     "test_table_info"
     "test_sql_database_run"
+    # pydantic.errors.PydanticUserError: `SQLDatabaseToolkit` is not fully defined; you should define `BaseCache`, then call `SQLDatabaseToolkit.model_rebuild()`.
+    "test_create_sql_agent"
+    # pydantic.errors.PydanticUserError: `NatBotChain` is not fully defined; you should define `BaseCache`, then call `NatBotChain.model_rebuild()`.
+    "test_proper_inputs"
+    # pydantic.errors.PydanticUserError: `NatBotChain` is not fully defined; you should define `BaseCache`, then call `NatBotChain.model_rebuild()`.
+    "test_variable_key_naming"
   ];
 
   meta = {
diff --git a/pkgs/development/python-modules/langchain-mongodb/default.nix b/pkgs/development/python-modules/langchain-mongodb/default.nix
index 0c1422bbeb593..78a3a9b06431f 100644
--- a/pkgs/development/python-modules/langchain-mongodb/default.nix
+++ b/pkgs/development/python-modules/langchain-mongodb/default.nix
@@ -36,6 +36,10 @@ buildPythonPackage rec {
 
   build-system = [ poetry-core ];
 
+  pythonRelaxDeps = [
+    "numpy"
+  ];
+
   dependencies = [
     langchain-core
     numpy
diff --git a/pkgs/development/python-modules/langchain/default.nix b/pkgs/development/python-modules/langchain/default.nix
index ad7821606b96c..c9788da19f19d 100644
--- a/pkgs/development/python-modules/langchain/default.nix
+++ b/pkgs/development/python-modules/langchain/default.nix
@@ -59,7 +59,10 @@ buildPythonPackage rec {
 
   buildInputs = [ bash ];
 
-  pythonRelaxDeps = [ "tenacity" ];
+  pythonRelaxDeps = [
+    "numpy"
+    "tenacity"
+  ];
 
   dependencies = [
     aiohttp
@@ -118,6 +121,21 @@ buildPythonPackage rec {
     "test_aliases_hidden"
   ];
 
+  disabledTestPaths = [
+    # pydantic.errors.PydanticUserError: `ConversationSummaryMemory` is not fully defined; you should define `BaseCache`, then call `ConversationSummaryMemory.model_rebuild()`.
+    "tests/unit_tests/chains/test_conversation.py"
+    # pydantic.errors.PydanticUserError: `ConversationSummaryMemory` is not fully defined; you should define `BaseCache`, then call `ConversationSummaryMemory.model_rebuild()`.
+    "tests/unit_tests/chains/test_memory.py"
+    # pydantic.errors.PydanticUserError: `ConversationSummaryBufferMemory` is not fully defined; you should define `BaseCache`, then call `ConversationSummaryBufferMemory.model_rebuild()`.
+    "tests/unit_tests/chains/test_summary_buffer_memory.py"
+    "tests/unit_tests/output_parsers/test_fix.py"
+    "tests/unit_tests/chains/test_llm_checker.py"
+    # TypeError: Can't instantiate abstract class RunnableSerializable[RetryOutputParserRetryChainInput, str] without an implementation for abstract method 'invoke'
+    "tests/unit_tests/output_parsers/test_retry.py"
+    # pydantic.errors.PydanticUserError: `LLMSummarizationCheckerChain` is not fully defined; you should define `BaseCache`, then call `LLMSummarizationCheckerChain.model_rebuild()`.
+    "tests/unit_tests/chains/test_llm_summarization_checker.py"
+  ];
+
   pythonImportsCheck = [ "langchain" ];
 
   passthru = {