diff --git a/Network/DnsCache.hs b/Network/DnsCache.hs
--- a/Network/DnsCache.hs
+++ b/Network/DnsCache.hs
@@ -37,7 +37,7 @@
     where
 
 import qualified Data.Map as M
-import Control.Concurrent
+import Control.Concurrent hiding (forkIO)
 import Control.ContStuff
 import Data.Char
 import Data.IORef
diff --git a/dnscache.cabal b/dnscache.cabal
--- a/dnscache.cabal
+++ b/dnscache.cabal
@@ -1,5 +1,5 @@
 Name:          dnscache
-Version:       1.0.1
+Version:       1.0.2
 Category:      Network
 Synopsis:      Caching DNS resolver library and mass DNS resolver utility
 Maintainer:    Ertugrul Söylemez <es@ertes.de>
@@ -19,7 +19,7 @@
     Build-depends:
         base >= 4 && <= 5,
         containers >= 0.3.0.0,
-        contstuff >= 1.0.1,
+        contstuff >= 1.2.0,
         dns >= 0.1.0,
         iproute >= 1.2.0,
         time >= 1.1.4