diff --git a/util/internal.json b/util/internal.json
index 33a1b3bd1f..4481442486 100644
--- a/util/internal.json
+++ b/util/internal.json
@@ -7,6 +7,8 @@
     "ns2",
     "ns3",
     "ns4",
+    "ns5",
+    "ns6",
     "raw",
     "www"
 ]