diff --git a/build_targets.json b/build_targets.json
index 66a9554..67db9ea 100644
--- a/build_targets.json
+++ b/build_targets.json
@@ -3,7 +3,6 @@
       "cf2",
       "bolt",
       "tag",
-      "flapper",
-      "cf21bl"
+      "flapper"
     ]
   }