diff --git a/pkgs/development/python-modules/google-auth/default.nix b/pkgs/development/python-modules/google-auth/default.nix
index 1990720e3159..b5677af717a9 100644
--- a/pkgs/development/python-modules/google-auth/default.nix
+++ b/pkgs/development/python-modules/google-auth/default.nix
@@ -25,14 +25,14 @@
 
 buildPythonPackage rec {
   pname = "google-auth";
-  version = "2.40.2";
+  version = "2.40.3";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "googleapis";
     repo = "google-auth-library-python";
     tag = "v${version}";
-    hash = "sha256-jO6brNdTH8BitLKKP/nwrlUo5hfQnThT/bPbzefvRbM=";
+    hash = "sha256-X1HTh24oos2GUxB9DDLtNH7BsBRLD0S/ngjsDAQYvhI=";
   };
 
   build-system = [ setuptools ];
@@ -101,7 +101,7 @@ buildPythonPackage rec {
       authentication mechanisms to access Google APIs.
     '';
     homepage = "https://github.com/googleapis/google-auth-library-python";
-    changelog = "https://github.com/googleapis/google-auth-library-python/blob/v${version}/CHANGELOG.md";
+    changelog = "https://github.com/googleapis/google-auth-library-python/blob/${src.tag}/CHANGELOG.md";
     license = lib.licenses.asl20;
     maintainers = [ lib.maintainers.sarahec ];
   };