diff --git a/hinotify.cabal b/hinotify.cabal
--- a/hinotify.cabal
+++ b/hinotify.cabal
@@ -1,5 +1,5 @@
 name:               hinotify
-version:            0.3.10
+version:            0.4
 build-type:         Simple
 synopsis:           Haskell binding to inotify
 description:
@@ -22,7 +22,7 @@
 library
     default-language: Haskell2010
     build-depends:  base >= 4.5.0.0 && < 5, bytestring, containers, unix,
-                    async >= 1.0 && < 2.3
+                    async == 2.*
 
     exposed-modules:
         System.INotify