diff --git a/nixos/modules/services/admin/pgadmin.nix b/nixos/modules/services/admin/pgadmin.nix
index 981ae1518b57..7060f0960606 100644
--- a/nixos/modules/services/admin/pgadmin.nix
+++ b/nixos/modules/services/admin/pgadmin.nix
@@ -241,7 +241,7 @@ in
         PrivateTmp = true;
         PrivateUsers = true;
         ProtectClock = true;
-        ProtectControlGroups = true;
+        ProtectControlGroups = "strict";
         ProtectHome = true;
         ProtectHostname = true;
         ProtectKernelLogs = true;