diff --git a/pkgs/development/python-modules/google-api-core/default.nix b/pkgs/development/python-modules/google-api-core/default.nix
index 7cb99ac62011..1c0db8d4a07e 100644
--- a/pkgs/development/python-modules/google-api-core/default.nix
+++ b/pkgs/development/python-modules/google-api-core/default.nix
@@ -7,26 +7,25 @@
   grpcio,
   grpcio-gcp,
   grpcio-status,
-  mock,
   proto-plus,
   protobuf,
   pytest-asyncio,
+  pytest-mock,
   pytestCheckHook,
-  pythonOlder,
   requests,
   setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "google-api-core";
-  version = "2.26.0";
+  version = "2.29.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "googleapis";
     repo = "python-api-core";
     tag = "v${version}";
-    hash = "sha256-BA2OWzr0sH77YUkFqMsGJQppqbG3R4sQ2kepicdzejE=";
+    hash = "sha256-wqDGtCYAH2f+P3zUfXgiQTePLr7a0qzUTeEc6pdCGio=";
   };
 
   build-system = [ setuptools ];
@@ -50,8 +49,8 @@ buildPythonPackage rec {
   };
 
   nativeCheckInputs = [
-    mock
     pytest-asyncio
+    pytest-mock
     pytestCheckHook
   ];