diff --git a/pkgs/development/python-modules/google-cloud-texttospeech/default.nix b/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
index 7adb663194b9..c5830b8d9304 100644
--- a/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
+++ b/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
@@ -14,14 +14,14 @@
 
 buildPythonPackage rec {
   pname = "google-cloud-texttospeech";
-  version = "2.16.3";
+  version = "2.16.4";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-+rwxUDLRN9oHELtMJoc00zYhLY+oMWsjsnfdOoTOchw=";
+    hash = "sha256-B7fioSbikhnSAk3WnkDLMf8IBb2uSVfcukUsatSGJAU=";
   };
 
   nativeBuildInputs = [ setuptools ];