diff --git a/pkgs/development/python-modules/langchain-anthropic/default.nix b/pkgs/development/python-modules/langchain-anthropic/default.nix
index af748fb30dea..cbe36704cd57 100644
--- a/pkgs/development/python-modules/langchain-anthropic/default.nix
+++ b/pkgs/development/python-modules/langchain-anthropic/default.nix
@@ -24,14 +24,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "langchain-anthropic";
-  version = "1.4.2";
+  version = "1.4.3";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-anthropic==${finalAttrs.version}";
-    hash = "sha256-V0unqMEfUTTNOxupBjStWD7JUCn1BQe25RIxSC/i4zI=";
+    hash = "sha256-u0Ur2SZFI8NkiVMBFieZIkc3cJL2IvrFvB4ueCvGMEU=";
   };
 
   sourceRoot = "${finalAttrs.src.name}/libs/partners/anthropic";