diff --git a/hoppy-docs.cabal b/hoppy-docs.cabal
--- a/hoppy-docs.cabal
+++ b/hoppy-docs.cabal
@@ -1,5 +1,5 @@
 name: hoppy-docs
-version: 0.2.0
+version: 0.2.1
 synopsis: C++ FFI generator - Documentation
 homepage: http://khumba.net/projects/hoppy
 license: AGPL-3
@@ -19,7 +19,7 @@
   exposed-modules:
       Foreign.Hoppy.Documentation.UsersGuide
   build-depends:
-      base >=4.7 && <4.9
+      base >=4.7 && <5
     , haskell-src >=1.0 && <1.1
     , hoppy-generator >=0.2 && <0.3
     , hoppy-runtime >=0.2 && <0.3