diff --git a/pkgs/development/python-modules/google-cloud-texttospeech/default.nix b/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
index f1cbf3f307ab..44055e84ce68 100644
--- a/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
+++ b/pkgs/development/python-modules/google-cloud-texttospeech/default.nix
@@ -15,7 +15,7 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-xQzCG134i2lmgNiqw6tshoIMDk0HHWpdzZtjSkVs9Z8=";
+    sha256 = "c50cc21b5df88b696680d8aac3ab6c86820c0e4d071d6a5dcd9b634a456cf59f";
   };
 
   propagatedBuildInputs = [ libcst google-api-core proto-plus ];