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 68ca4b04c0e0..1f26c6f3317a 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 = "0.11.4";
+  version = "0.12.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "5009e831dcec22f3ff00e89405249d6a838d1449a46ac8224907aa5b0e0b1aec";
+    sha256 = "0bfb5b56f648f457021a91c0df0db4934b6e0c300bd0f2de2333383fe958aa72";
   };
 
   propagatedBuildInputs = [ grpcio googleapis_common_protos ];