diff --git a/pkgs/development/python-modules/google-cloud-texttospeech/default.nix b/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
index 8164ebb27137..15f416ad28cb 100644
--- a/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
+++ b/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
@@ -14,7 +14,7 @@
 
 buildPythonPackage rec {
   pname = "google-cloud-texttospeech";
-  version = "2.18.0";
+  version = "2.21.1";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   src = fetchPypi {
     pname = "google_cloud_texttospeech";
     inherit version;
-    hash = "sha256-jR91d6b4btSDNeEIFGgCYeKXbaVIiMih1YYETuGRlvQ=";
+    hash = "sha256-nfDiywBfleDpHZ8Av2GhIuS0xyyNiG8PJ7a3/ZEVx+w=";
   };
 
   build-system = [ setuptools ];