diff --git a/hosts/marvin/services/gdq-cals.nix b/hosts/marvin/services/gdq-cals.nix
index 26bf0334..481b6550 100644
--- a/hosts/marvin/services/gdq-cals.nix
+++ b/hosts/marvin/services/gdq-cals.nix
@@ -4,7 +4,7 @@
   ...
 }:
 let
-  pyWithLibs = pkgs.python312.withPackages (ps: [
+  pyWithLibs = pkgs.python313.withPackages (ps: [
     ps.pytz
     ps.icalendar
     ps.requests