diff --git a/Control/Monad/Attempt.hs b/Control/Monad/Attempt.hs
--- a/Control/Monad/Attempt.hs
+++ b/Control/Monad/Attempt.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE Rank2Types #-}
+{-# LANGUAGE CPP #-}
 ---------------------------------------------------------
 --
 -- Module        : Control.Monad.Attempt
@@ -26,8 +27,12 @@
 import Data.Attempt
 import Control.Applicative
 import Control.Monad
+#if TRANSFORMERS_02
 import Control.Monad.Trans.Class
 import Control.Monad.IO.Class
+#else
+import Control.Monad.Trans
+#endif
 import Control.Exception (Exception)
 
 newtype AttemptT m v = AttemptT {
diff --git a/control-monad-attempt.cabal b/control-monad-attempt.cabal
--- a/control-monad-attempt.cabal
+++ b/control-monad-attempt.cabal
@@ -1,5 +1,5 @@
 name:            control-monad-attempt
-version:         0.2.0
+version:         0.2.0.1
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman, Nicolas Pouillard
@@ -12,10 +12,17 @@
 build-type:      Simple
 homepage:        http://github.com/snoyberg/control-monad-attempt
 
+flag transformers_02
+    description: transformers = 0.2.*
+
 library
     build-depends:   base >= 4 && < 5,
                      syb,
-                     transformers >= 0.2 && < 0.3,
                      attempt >= 0.2.2 && < 0.3
     exposed-modules: Control.Monad.Attempt
+    if flag(transformers_02)
+      build-depends: transformers >= 0.2 && < 0.3
+      CPP-OPTIONS: -DTRANSFORMERS_02
+    else
+      build-depends: transformers >= 0.1 && < 0.2
     ghc-options:     -Wall