diff --git a/pkgs/development/python-modules/google-cloud-pubsub/default.nix b/pkgs/development/python-modules/google-cloud-pubsub/default.nix
index f69f56fb510d..079d482b35e7 100644
--- a/pkgs/development/python-modules/google-cloud-pubsub/default.nix
+++ b/pkgs/development/python-modules/google-cloud-pubsub/default.nix
@@ -1,35 +1,34 @@
-{ lib
-, buildPythonPackage
-, fetchPypi
-, google-api-core
-, google-cloud-testutils
-, grpc-google-iam-v1
-, grpcio
-, grpcio-status
-, libcst
-, proto-plus
-, protobuf
-, pytest-asyncio
-, pytestCheckHook
-, pythonOlder
-, setuptools
+{
+  lib,
+  buildPythonPackage,
+  fetchPypi,
+  google-api-core,
+  google-cloud-testutils,
+  grpc-google-iam-v1,
+  grpcio,
+  grpcio-status,
+  libcst,
+  proto-plus,
+  protobuf,
+  pytest-asyncio,
+  pytestCheckHook,
+  pythonOlder,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "google-cloud-pubsub";
-  version = "2.21.0";
+  version = "2.21.1";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-lAF/C8moX6P02RPzEukwoP4hd1vWjd5cZm4vGxrd+BE=";
+    hash = "sha256-MfzwdES3+BOmFsS2UOH78dyZigiP4AWadhZIVawX8Fw=";
   };
 
-  build-system = [
-    setuptools
-  ];
+  build-system = [ setuptools ];
 
   dependencies = [
     google-api-core
@@ -42,9 +41,7 @@ buildPythonPackage rec {
   ] ++ google-api-core.optional-dependencies.grpc;
 
   passthru.optional-dependencies = {
-    libcst = [
-      libcst
-    ];
+    libcst = [ libcst ];
   };
 
   nativeCheckInputs = [
@@ -63,9 +60,7 @@ buildPythonPackage rec {
     "tests/unit/pubsub_v1"
   ];
 
-  pythonImportsCheck = [
-    "google.cloud.pubsub"
-  ];
+  pythonImportsCheck = [ "google.cloud.pubsub" ];
 
   meta = with lib; {
     description = "Google Cloud Pub/Sub API client library";