diff --git a/pkgs/development/python-modules/langchain-tests/default.nix b/pkgs/development/python-modules/langchain-tests/default.nix
index 01a7733d746f..526ca96776a3 100644
--- a/pkgs/development/python-modules/langchain-tests/default.nix
+++ b/pkgs/development/python-modules/langchain-tests/default.nix
@@ -30,14 +30,14 @@
 
 buildPythonPackage rec {
   pname = "langchain-tests";
-  version = "1.1.1";
+  version = "1.1.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-tests==${version}";
-    hash = "sha256-WJITm+8XIqezr/2U8HpE0J4hYdzg2Z6tw8b5s6SF6m0=";
+    hash = "sha256-g5s7zL4l/kIUoIu7/3+Ve3SXW3O9tj8f2N3bZ0gbBts=";
   };
 
   sourceRoot = "${src.name}/libs/standard-tests";
@@ -73,11 +73,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = [
-    # Prone to failure when langchain-core is newer than the tests
-    "test_serdes"
-  ];
-
   passthru = {
     # python updater script sets the wrong tag
     skipBulkUpdate = true;