diff --git a/services/postgres/default.nix b/services/postgres/default.nix
index 32e49a5..b0f13e4 100644
--- a/services/postgres/default.nix
+++ b/services/postgres/default.nix
@@ -12,8 +12,8 @@ in {
   config = lib.mkIf cfg.enable {
     systemd.tmpfiles.rules = [
       "d /var/db 0755 root root - -"
-      "d /var/db/postgresql 0770 postgres postgres - -"
-      "d ${dataDir} 0770 postgres postgres - -"
+      "d /var/db/postgresql 0750 postgres postgres - -"
+      "d ${dataDir} 0750 postgres postgres - -"
     ];
 
     services.postgresql = {