diff --git a/pkgs/development/python-modules/google-cloud-spanner/default.nix b/pkgs/development/python-modules/google-cloud-spanner/default.nix
index f37fade9c790..2b31f280621d 100644
--- a/pkgs/development/python-modules/google-cloud-spanner/default.nix
+++ b/pkgs/development/python-modules/google-cloud-spanner/default.nix
@@ -14,11 +14,11 @@
 
 buildPythonPackage rec {
   pname = "google-cloud-spanner";
-  version = "3.20.0";
+  version = "3.21.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-3KnpesMoqjjXgHjHihLN8cnYjtO07sbjHL1G4ZyInZ8=";
+    sha256 = "sha256-47fR2Pwwl9HJ5pIqf8H0QjmrVYy5NgN5sdk3nH4yf/Q=";
   };
 
   propagatedBuildInputs = [