@@ -23,5 +23,5 @@ library
2323 exposed-modules: Control.Lens.SemiIso
2424 Control.Lens.Internal.SemiIso
2525 Data.SemiIsoFunctor
26− build-depends: base, profunctors, transformers, lens
26+ build-depends: base >= 4 && < 5, profunctors, transformers, lens
2727 default-language: Haskell2010