diff --git a/Control/Concurrent/Async.hs b/Control/Concurrent/Async.hs
--- a/Control/Concurrent/Async.hs
+++ b/Control/Concurrent/Async.hs
@@ -83,12 +83,41 @@
 import Control.Monad.Catch (finally, try, onException)
 import Control.Monad.Conc.Class
 import Control.Monad.STM.Class
+
+#if MIN_VERSION_dejafu(0,3,0)
 import Control.Concurrent.Classy.STM.TMVar (newEmptyTMVar, putTMVar, readTMVar)
+#else
+import Control.Concurrent.STM.CTMVar (CTMVar, newEmptyCTMVar, putCTMVar, readCTMVar)
+#endif
 
 #if !MIN_VERSION_base(4,8,0)
 import Data.Traversable
 #endif
 
+#if !MIN_VERSION_dejafu(0,3,0)
+type MVar m = CVar m
+
+newEmptyMVar :: MonadConc m => m (MVar m a)
+newEmptyMVar = newEmptyCVar
+
+putMVar :: MonadConc m => MVar m a -> a -> m ()
+putMVar = putCVar
+
+takeMVar :: MonadConc m => MVar m a -> m a
+takeMVar = takeCVar
+
+type STM   m = STMLike m
+type TMVar m = CTMVar  m
+
+newEmptyTMVar :: MonadSTM stm => stm (TMVar stm a)
+newEmptyTMVar = newEmptyCTMVar
+
+putTMVar :: MonadSTM stm => TMVar stm a -> a -> stm ()
+putTMVar = putCTMVar
+
+readTMVar :: MonadSTM stm => TMVar stm a -> stm a
+readTMVar = readCTMVar
+#endif
 
 -----------------------------------------------------------------------------------------
 -- Asynchronous and Concurrent Actions
diff --git a/async-dejafu.cabal b/async-dejafu.cabal
--- a/async-dejafu.cabal
+++ b/async-dejafu.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                async-dejafu
-version:             0.1.1.0
+version:             0.1.2.0
 synopsis:            Run MonadConc operations asynchronously and wait for their results.
 
 description:
@@ -37,14 +37,14 @@
 source-repository this
   type:     git
   location: https://github.com/barrucadu/dejafu.git
-  tag:      async-dejafu-0.1.1.0
+  tag:      async-dejafu-0.1.2.0
 
 library
   exposed-modules:     Control.Concurrent.Async
   -- other-modules:       
   -- other-extensions:    
   build-depends:       base >=4.5 && <5
-                     , dejafu == 0.3.*
+                     , dejafu >= 0.2
                      , exceptions
   -- hs-source-dirs:      
   default-language:    Haskell2010