diff --git a/pkgs/servers/mail/mailman/default.nix b/pkgs/servers/mail/mailman/default.nix
index 3295bdbb68d6..290bb4e1a1e0 100644
--- a/pkgs/servers/mail/mailman/default.nix
+++ b/pkgs/servers/mail/mailman/default.nix
@@ -1,7 +1,7 @@
 {
   newScope,
   lib,
-  python3,
+  python312,
 }:
 
 let
@@ -13,7 +13,7 @@ let
     {
       callPackage = newScope self;
 
-      python3 = callPackage ./python.nix { inherit python3; };
+      python3 = callPackage ./python.nix { python3 = python312; };
 
       hyperkitty = callPackage ./hyperkitty.nix { };