diff --git a/syb.cabal b/syb.cabal
index cc3aaa8..1f3a313 100644
--- a/syb.cabal
+++ b/syb.cabal
@@ -26,7 +26,7 @@ extra-source-files:     tests/*.hs,
 
 Library {
   hs-source-dirs:         src
-  build-depends:          base >= 4.0 && < 4.4
+  build-depends:          base >= 4.0 && < 4.5
   exposed-modules:        Data.Generics,
                           Data.Generics.Basics,
                           Data.Generics.Instances,