diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+0.3.1.8
+  * Allow monad-control 1.0.*.
+
 0.3.1.7
   * Allow transformers 0.4.*.
 
diff --git a/flock.cabal b/flock.cabal
--- a/flock.cabal
+++ b/flock.cabal
@@ -1,5 +1,5 @@
 Name:               flock
-Version:            0.3.1.7
+Version:            0.3.1.8
 License:            OtherLicense
 License-File:       COPYING
 Copyright:          Ian Lynagh, 2007
@@ -23,7 +23,7 @@
 Library
   Build-Depends:      base > 3 && < 5
                     , transformers >= 0.2 && < 0.5
-                    , monad-control >= 0.3 && < 0.4
+                    , monad-control >= 0.3 && < 1.1
                     , lifted-base >= 0.1 && < 0.3
                     , unix >= 2.3 && < 2.8
   Exposed-modules:    System.Lock.FLock