diff --git a/pkgs/development/python-modules/grpc-google-iam-v1/default.nix b/pkgs/development/python-modules/grpc-google-iam-v1/default.nix
index eb47b502d82a..16aa7ba32012 100644
--- a/pkgs/development/python-modules/grpc-google-iam-v1/default.nix
+++ b/pkgs/development/python-modules/grpc-google-iam-v1/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "grpc-google-iam-v1";
-  version = "0.12.4";
+  version = "0.12.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-PwrCyUC5qFXXzn4x/eKL3bDZrDYtMtB8ZxSDBpMaDjA=";
+    sha256 = "sha256-K8S4/fIhFaZddRyTFzKTImAsObfIaiicm3LSKNlg718=";
   };
 
   propagatedBuildInputs = [ grpcio googleapis-common-protos ];