diff --git a/nixos/modules/config/users-groups.nix b/nixos/modules/config/users-groups.nix
index 59f1b44483df..ad61a4116ef1 100644
--- a/nixos/modules/config/users-groups.nix
+++ b/nixos/modules/config/users-groups.nix
@@ -871,6 +871,7 @@ in
         render.gid = ids.gids.render;
         sgx.gid = ids.gids.sgx;
         shadow.gid = ids.gids.shadow;
+        clock.gid = ids.gids.clock;
       };
 
       system.activationScripts.users =
@@ -1033,6 +1034,7 @@ in
           cdrom = { };
           tape = { };
           kvm = { };
+          clock = { };
         };
       };
 
diff --git a/nixos/modules/misc/ids.nix b/nixos/modules/misc/ids.nix
index 949531d9a83c..b3cf6a063356 100644
--- a/nixos/modules/misc/ids.nix
+++ b/nixos/modules/misc/ids.nix
@@ -690,6 +690,7 @@ in
       rstudio-server = 324;
       localtimed = 325;
       automatic-timezoned = 326;
+      clock = 327;
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal