diff --git a/nixos/server/package-configs/mail-server/default.nix b/nixos/server/package-configs/mail-server/default.nix
index 20f000c..7047936 100644
--- a/nixos/server/package-configs/mail-server/default.nix
+++ b/nixos/server/package-configs/mail-server/default.nix
@@ -6,7 +6,7 @@
   # services.dovecot2.sieve.extensions = ["fileinto"];
 
   mailserver = {
-    stateVersion = 3;
+    stateVersion = 4;
     enable = true;
     enableImap = true;
     enableSubmission = true;