diff --git a/manifest.json b/manifest.json
index ac5ff5a..de14fcf 100644
--- a/manifest.json
+++ b/manifest.json
@@ -102,7 +102,15 @@
       {
         "url": "__gitlab_instance_url__/.*",
         "methods": ["GET", "POST", "PUT"],
-        "timeout": 10
+        "timeout": 10,
+        "settingsInjection": {
+          "app_id": {
+            "querystring": ["client_id"]
+          },
+          "client_secret": {
+            "querystring": ["client_secret"]
+          }
+        }
       }
     ]
   }
diff --git a/src/services/gitlab/constants.ts b/src/services/gitlab/constants.ts
index cf7e27e..4e743dc 100644
--- a/src/services/gitlab/constants.ts
+++ b/src/services/gitlab/constants.ts
@@ -4,7 +4,7 @@ export const placeholders = {
     gitlab_instance_url: "__gitlab_instance_url__",
     TOKEN: "[user[oauth2/token]]",
     TOKEN_PATH: "oauth2/token",
-};
+} as const;
 
 export const BASE_URL = "__gitlab_instance_url__";