diff --git a/Foreign/Ptr/Region/Internal.hs b/Foreign/Ptr/Region/Internal.hs
--- a/Foreign/Ptr/Region/Internal.hs
+++ b/Foreign/Ptr/Region/Internal.hs
@@ -44,12 +44,13 @@
 import Control.Monad.Trans                    ( MonadIO, liftIO )
 
 -- from regions:
-import Control.Monad.Trans.Region             ( RegionalHandle )
-import Control.Monad.Trans.Region.Unsafe      ( Resource
+import Control.Resource                       ( Resource
                                               , Handle
                                               , openResource
                                               , closeResource
-                                              , internalHandle
+                                              )
+import Control.Monad.Trans.Region             ( RegionalHandle )
+import Control.Monad.Trans.Region.Unsafe      ( internalHandle
                                               , mapInternalHandle
                                               )
 #ifdef __HADDOCK__
diff --git a/regional-pointers.cabal b/regional-pointers.cabal
--- a/regional-pointers.cabal
+++ b/regional-pointers.cabal
@@ -1,5 +1,5 @@
 name:          regional-pointers
-version:       0.1
+version:       0.1.0.1
 cabal-version: >=1.6
 build-type:    Custom
 license:       BSD3
@@ -42,11 +42,11 @@
 
 Library
   GHC-Options: -Wall
-  build-depends: base                      >= 4 && < 4.3
-               , base-unicode-symbols      >= 0.1.1 && < 0.2
-               , regions                   == 0.3.*
-               , transformers              >= 0.1.4 && < 0.2
-               , MonadCatchIO-transformers == 0.0.2.*
+  build-depends: base                      >= 4       && < 4.3
+               , base-unicode-symbols      >= 0.1.1   && < 0.2
+               , regions                   == 0.4.*
+               , transformers              >= 0.1.4   && < 0.2
+               , MonadCatchIO-transformers >= 0.0.2.0 && < 0.1
   exposed-modules: Foreign.Ptr.Region
                    Foreign.Ptr.Region.Unsafe
                    Foreign.Marshal.Alloc.Region