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:             0.0.5
+version:             0.0.7
 
 synopsis: This package implments a parser for the CSS syntax
 description:
@@ -31,8 +31,8 @@
      Data.CSS.Syntax.Tokens
 
   build-depends:
-     base >=4 && <4.10
-   , attoparsec >= 0.13
+     base >=4 && <5
+   , attoparsec >=0.13
    , bytestring
    , scientific
    , text
@@ -48,9 +48,12 @@
   type:                exitcode-stdio-1.0
   main-is:             Test.hs
 
+  other-modules:
+     Data.CSS.Syntax.Tokens
+
   build-depends:
-     base >=4 && <4.10
-   , attoparsec >= 0.13
+     base >=4 && <5
+   , attoparsec >=0.13
    , bytestring
    , scientific
    , text