diff --git a/pkgs/development/python-modules/gcal-sync/default.nix b/pkgs/development/python-modules/gcal-sync/default.nix
index 5e4b40e612bc..110b04f658df 100644
--- a/pkgs/development/python-modules/gcal-sync/default.nix
+++ b/pkgs/development/python-modules/gcal-sync/default.nix
@@ -13,7 +13,7 @@
 
 buildPythonPackage rec {
   pname = "gcal-sync";
-  version = "4.0.3";
+  version = "4.0.4";
   format = "setuptools";
 
   disabled = pythonOlder "3.9";
@@ -22,7 +22,7 @@ buildPythonPackage rec {
     owner = "allenporter";
     repo = "gcal_sync";
     rev = "refs/tags/${version}";
-    hash = "sha256-FDxyuSR0Ekal/3+OhR3Z0pkiWYMToeCcfwBQp3bjnyw=";
+    hash = "sha256-g0hnwUX33qZ36JgKx3KHP3BciYujQ+Eahe6bF3m87FM=";
   };
 
   propagatedBuildInputs = [