diff --git a/hoppy-generator.cabal b/hoppy-generator.cabal
--- a/hoppy-generator.cabal
+++ b/hoppy-generator.cabal
@@ -1,5 +1,5 @@
 name: hoppy-generator
-version: 0.2.0
+version: 0.2.1
 synopsis: C++ FFI generator - Code generator
 homepage: http://khumba.net/projects/hoppy
 license: AGPL-3
@@ -35,7 +35,7 @@
     , FunctionalDependencies
     , MultiParamTypeClasses
   build-depends:
-      base >=4.7 && <4.9
+      base >=4.7 && <5
     , containers >=0.5 && <0.6
     , directory >=1.2 && <1.3
     , filepath >=1.3 && <1.5