diff --git a/pkgs/development/python-modules/langchain-protocol/default.nix b/pkgs/development/python-modules/langchain-protocol/default.nix
index 491e71f7956b..85a85d42d11e 100644
--- a/pkgs/development/python-modules/langchain-protocol/default.nix
+++ b/pkgs/development/python-modules/langchain-protocol/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "langchain-protocol";
-  version = "0.0.12";
+  version = "0.0.15";
   pyproject = true;
 
   # Not available vis Github yet; required by langchain-core
   src = fetchPypi {
     pname = "langchain_protocol";
     inherit (finalAttrs) version;
-    hash = "sha256-XhTENCkKcFyVEP2xqD7PdWGl5uDf0FOTCt6A26BpJp8=";
+    hash = "sha256-mrLRHuc5RHVPEOA35xcJjTpnlvDlivqcrdphVOdlWt4=";
   };
 
   build-system = [