diff --git a/build_targets.json b/build_targets.json
index 67db9ea83..66a95545d 100644
--- a/build_targets.json
+++ b/build_targets.json
@@ -3,6 +3,7 @@
       "cf2",
       "bolt",
       "tag",
-      "flapper"
+      "flapper",
+      "cf21bl"
     ]
   }