diff --git a/MANIFEST.json b/MANIFEST.json
index 6cfaa2d..12951f8 100644
--- a/MANIFEST.json
+++ b/MANIFEST.json
@@ -337,7 +337,7 @@
     },
     {
       "version": 1,
-      "name": "RSIT",
+      "name": "rsit",
       "description": "Reference Security Incident Classification Taxonomy."
     }
   ],
diff --git a/rsit/machinetag.json b/rsit/machinetag.json
index 6ac8196..75e4d10 100644
--- a/rsit/machinetag.json
+++ b/rsit/machinetag.json
@@ -275,5 +275,5 @@
   ],
   "version": 1,
   "description": "Reference Security Incident Classification Taxonomy",
-  "namespace": "RSIT"
+  "namespace": "rsit"
 }