diff --git a/nixos/modules/services/security/oauth2_proxy.nix b/nixos/modules/services/security/oauth2_proxy.nix
index ce295bd4ba3b..5c89d5872376 100644
--- a/nixos/modules/services/security/oauth2_proxy.nix
+++ b/nixos/modules/services/security/oauth2_proxy.nix
@@ -571,8 +571,11 @@ in
     users.users.oauth2_proxy = {
       description = "OAuth2 Proxy";
       isSystemUser = true;
+      group = "oauth2_proxy";
     };
 
+    users.groups.oauth2_proxy = {};
+
     systemd.services.oauth2_proxy = {
       description = "OAuth2 Proxy";
       path = [ cfg.package ];