diff --git a/haskeline-class.cabal b/haskeline-class.cabal
--- a/haskeline-class.cabal
+++ b/haskeline-class.cabal
@@ -1,5 +1,5 @@
 Name:                   haskeline-class
-Version:                0.6.1
+Version:                0.6.2
 License:                BSD3
 License-File:           LICENSE
 Author:                 Antoine Latter
@@ -32,6 +32,6 @@
 Cabal-Version:          >= 1.2
 
 Library
-  Build-Depends:        haskeline >= 0.6, haskeline < 0.7, base >= 3, base < 5, mtl >= 1.1, mtl < 1.2
+  Build-Depends:        haskeline >= 0.6, haskeline < 0.7, base >= 3 && < 5, mtl >= 1.1 && < 2.1
 
   Exposed-modules:      System.Console.Haskeline.Class