diff --git a/css-syntax.cabal b/css-syntax.cabal
--- a/css-syntax.cabal
+++ b/css-syntax.cabal
@@ -1,5 +1,5 @@
 name:                css-syntax
-version:             0.0.4
+version:             0.0.5
 
 synopsis: This package implments a parser for the CSS syntax
 description:
@@ -31,7 +31,7 @@
      Data.CSS.Syntax.Tokens
 
   build-depends:
-     base >=4 && <4.9
+     base >=4 && <4.10
    , attoparsec >= 0.13
    , bytestring
    , scientific
@@ -49,7 +49,7 @@
   main-is:             Test.hs
 
   build-depends:
-     base >=4 && <4.9
+     base >=4 && <4.10
    , attoparsec >= 0.13
    , bytestring
    , scientific