diff --git a/pkgs/development/python-modules/anthropic/default.nix b/pkgs/development/python-modules/anthropic/default.nix
index de7f25e359e7..64e2337a54c6 100644
--- a/pkgs/development/python-modules/anthropic/default.nix
+++ b/pkgs/development/python-modules/anthropic/default.nix
@@ -24,20 +24,21 @@
   dirty-equals,
   nest-asyncio,
   pytest-asyncio,
+  pytest-xdist,
   pytestCheckHook,
   respx,
 }:
 
 buildPythonPackage rec {
   pname = "anthropic";
-  version = "0.52.2";
+  version = "0.55.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "anthropics";
     repo = "anthropic-sdk-python";
     tag = "v${version}";
-    hash = "sha256-vCIS2NDsScKESfYFHDTSRLb9ZhUsrEPHyfuubrbc+44=";
+    hash = "sha256-2IdsWNQdp4Cr6xP1MDnj5EN/jyGcxuc5bTKg349DpI8=";
   };
 
   postPatch = ''
@@ -69,6 +70,7 @@ buildPythonPackage rec {
     dirty-equals
     nest-asyncio
     pytest-asyncio
+    pytest-xdist
     pytestCheckHook
     respx
   ];