--- a/kan-extensions.cabal
+++ b/kan-extensions.cabal
@@ -47,7 +47,6 @@
     containers    >= 0.4     && < 0.6,
     contravariant >= 1       && < 2,
     distributive  >= 0.2.2   && < 1,
-    fail          >= 4.9     && < 5,
     free          >= 4       && < 5,
     mtl           >= 2.0.1   && < 2.3,
     semigroupoids >= 4       && < 6,