diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7564acf7..3c1e00db 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -245,7 +245,6 @@ packages:
         - MFlow
 
     "Edward Kmett <ekmett@gmail.com>":
-        # BLOCKED comonad 5 
         - ad
         - adjunctions
         # GHC 8 - approximate