diff --git a/util/reserved.json b/util/reserved.json
index 11258fb09f..cc6eb3d065 100644
--- a/util/reserved.json
+++ b/util/reserved.json
@@ -129,6 +129,7 @@
     "system",
     "team",
     "test",
+    "testing",
     "tools",
     "url",
     "util",