diff --git a/pkgs/development/python-modules/llm-anthropic/default.nix b/pkgs/development/python-modules/llm-anthropic/default.nix
index 6418ddc8c2cf..c0ba9772382f 100644
--- a/pkgs/development/python-modules/llm-anthropic/default.nix
+++ b/pkgs/development/python-modules/llm-anthropic/default.nix
@@ -14,14 +14,14 @@
 
 buildPythonPackage rec {
   pname = "llm-anthropic";
-  version = "0.15.1";
+  version = "0.16a2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "simonw";
     repo = "llm-anthropic";
     tag = version;
-    hash = "sha256-8bVs3MJteOTCiw7n/4pMf+oXMhsQbCSzUFVQqm2ezcE=";
+    hash = "sha256-jb1QetMxvDu45wX/AieBUKEk1KSKUt0heCNEYyOGj6w=";
   };
 
   build-system = [