diff --git a/modules/config/users-groups.nix b/modules/config/users-groups.nix
index 598d68eb91db..b5b692654552 100644
--- a/modules/config/users-groups.nix
+++ b/modules/config/users-groups.nix
@@ -208,6 +208,7 @@ in
       users = { };
       nixbld = { };
       utmp = { };
+      adm = { }; # expected by journald
     };
 
     system.activationScripts.rootPasswd = stringAfter [ "etc" ]
diff --git a/modules/misc/ids.nix b/modules/misc/ids.nix
index 13ebf954f329..cc514fb79c81 100644
--- a/modules/misc/ids.nix
+++ b/modules/misc/ids.nix
@@ -123,6 +123,7 @@ in
     mpd = 50;
     clamav = 51;
     fprot = 52;
+    adm = 55;
 
     # When adding a gid, make sure it doesn't match an existing uid.