diff --git a/filecache.cabal b/filecache.cabal
--- a/filecache.cabal
+++ b/filecache.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                filecache
-version:             0.2.4
+version:             0.2.5
 synopsis:            A Linux-only cache system associating values to files.
 description:         A Linux-only cache system, that works by associating computation results with file names. When the files are modified, the cache entries are discarded.
 homepage:            http://lpuppet.banquise.net/
@@ -26,7 +26,7 @@
   exposed-modules:     Data.FileCache
   ghc-options:         -Wall
   -- other-modules:       
-  build-depends:       base                 == 4.6.*
+  build-depends:       base                 >= 4.6   && < 5
                      , unordered-containers == 0.2.*
                      , hashable             >= 1.2   && < 1.3
                      , hinotify             >= 0.3.6 && < 0.4