diff --git a/modules/crans/users.nix b/modules/crans/users.nix
index f04a6d6..80d3ff6 100644
--- a/modules/crans/users.nix
+++ b/modules/crans/users.nix
@@ -1,17 +1,21 @@
 { config, lib, ... }:
 
 {
-  users.ldap = {
-    enable = true;
-    base = "dc=crans,dc=org";
-    server = "ldaps://ldap-adm.adm.crans.org/";
-    daemon = {
+  users = {
+    mutableUsers = false;
+
+    ldap = {
       enable = true;
-      extraConfig = ''
-        ldap_version 3
-          tls_reqcert allow
-          map passwd loginShell /run/current-system/sw/bin/bash
-      '';
+      base = "dc=crans,dc=org";
+      server = "ldaps://ldap-adm.adm.crans.org/";
+      daemon = {
+        enable = true;
+        extraConfig = ''
+          ldap_version 3
+            tls_reqcert allow
+            map passwd loginShell /run/current-system/sw/bin/bash
+        '';
+      };
     };
   };