diff --git a/pkgs/development/python-modules/google-cloud-iam/default.nix b/pkgs/development/python-modules/google-cloud-iam/default.nix
index f928680d3faf..803aede8a80b 100644
--- a/pkgs/development/python-modules/google-cloud-iam/default.nix
+++ b/pkgs/development/python-modules/google-cloud-iam/default.nix
@@ -1,7 +1,8 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
+  gitUpdater,
   google-api-core,
   google-auth,
   grpc-google-iam-v1,
@@ -11,23 +12,23 @@
   protobuf,
   pytest-asyncio,
   pytestCheckHook,
-  pythonOlder,
   setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "google-cloud-iam";
-  version = "2.18.3";
+  version = "2.19.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
-
-  src = fetchPypi {
-    pname = "google_cloud_iam";
-    inherit version;
-    hash = "sha256-JlStzDhOHRigXFxO5V+MWxZcsjt0ECzNS8JV1ITFCnk=";
+  src = fetchFromGitHub {
+    owner = "googleapis";
+    repo = "google-cloud-python";
+    tag = "google-cloud-iam-v${version}";
+    hash = "sha256-E1LISOLQcXqUMTTPLR+lwkR6gF1fuGGB44j38cIK/Z4=";
   };
 
+  sourceRoot = "${src.name}/packages/google-cloud-iam";
+
   build-system = [ setuptools ];
 
   dependencies = [
@@ -55,11 +56,18 @@ buildPythonPackage rec {
     "google.cloud.iam_credentials_v1"
   ];
 
-  meta = with lib; {
+  passthru.updateScript = gitUpdater {
+    rev-prefix = "google-cloud-iam-v";
+  };
+
+  meta = {
     description = "IAM Service Account Credentials API client library";
     homepage = "https://github.com/googleapis/google-cloud-python/tree/main/packages/google-cloud-iam";
-    changelog = "https://github.com/googleapis/google-cloud-python/blob/google-cloud-iam-v${version}/packages/google-cloud-iam/CHANGELOG.md";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ austinbutler ];
+    changelog = "https://github.com/googleapis/google-cloud-python/blob/${src.tag}/packages/google-cloud-iam/CHANGELOG.md";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [
+      austinbutler
+      sarahec
+    ];
   };
 }