diff --git a/Network/Wai/Handler/DevelServer.hs b/Network/Wai/Handler/DevelServer.hs
--- a/Network/Wai/Handler/DevelServer.hs
+++ b/Network/Wai/Handler/DevelServer.hs
@@ -25,14 +25,14 @@
 import Control.Monad
 import Control.Concurrent.MVar
 
-import System.Directory (getModificationTime)
 import qualified Network.Wai.Handler.Warp as Warp
 import Network.Wai.Application.Devel
 import Network.Wai.Middleware.RequestLogger (logStdoutDev)
 
 import Data.List (nub, group, sort)
-import System.Time (ClockTime)
 
+import Network.Wai.Handler.DevelServer.Compat
+
 type FunctionName = String
 
 runNoWatch :: Int -> ModuleName -> FunctionName
@@ -98,8 +98,8 @@
     void x = x >> return ()
 -}
 
-getTimes :: [FilePath] -> IO [ClockTime]
-getTimes = E.handle (constSE $ return []) . mapM getModificationTime
+getTimes :: [FilePath] -> IO [TimeStamp]
+getTimes = E.handle (constSE $ return []) . mapM getTimeStamp
 
 constSE :: x -> SomeException -> x
 constSE = const
@@ -129,7 +129,7 @@
        -> Maybe SomeException
        -> AppHolder
        -> [IO ()]
-       -> IO (Maybe SomeException, [(FilePath, ClockTime)])
+       -> IO (Maybe SomeException, [(FilePath, TimeStamp)])
 reload modu func extras prevError ah actions = do
     case prevError of
          Nothing -> putStrLn "Attempting to interpret your app..."
diff --git a/Network/Wai/Handler/DevelServer/Compat.hs b/Network/Wai/Handler/DevelServer/Compat.hs
new file mode 100644
--- /dev/null
+++ b/Network/Wai/Handler/DevelServer/Compat.hs
@@ -0,0 +1,19 @@
+{-# LANGUAGE CPP #-}
+module Network.Wai.Handler.DevelServer.Compat (
+  TimeStamp
+, getTimeStamp
+) where
+
+import System.Directory (getModificationTime)
+
+#if MIN_VERSION_directory(1,2,0)
+import Data.Time.Clock (UTCTime)
+newtype TimeStamp = TimeStamp UTCTime
+#else
+import System.Time (ClockTime)
+newtype TimeStamp = TimeStamp ClockTime
+#endif
+  deriving Eq
+
+getTimeStamp :: FilePath -> IO TimeStamp
+getTimeStamp = fmap TimeStamp . getModificationTime
diff --git a/wai-handler-devel.cabal b/wai-handler-devel.cabal
--- a/wai-handler-devel.cabal
+++ b/wai-handler-devel.cabal
@@ -1,5 +1,5 @@
 Name:                wai-handler-devel
-Version:             1.3.0.2
+Version:             1.3.0.3
 Synopsis:            WAI server that automatically reloads code after modification.
 Description:         This handler automatically reloads your source code upon any changes. It works by using the hint package, essentially embedding GHC inside the handler. The handler (both the executable and library) takes three arguments: the port to listen on, the module name containing the application function, and the name of the function.
                      .
@@ -32,18 +32,20 @@
                    , hint                  >= 0.3.2.3       && < 0.4
                    , text                  >= 0.7
                    , old-time
+                   , time
                    , transformers          >= 0.2.2
                    , attoparsec            >= 0.10
   Exposed-modules:   Network.Wai.Handler.DevelServer
                      Network.Wai.Application.Devel
+  Other-modules:     Network.Wai.Handler.DevelServer.Compat
   ghc-options:       -Wall
 
 Executable           wai-handler-devel
   Build-Depends:     cmdargs >= 0.4
-  ghc-options:       -Wall -O2 -threaded
+  ghc-options:       -Wall -threaded
   main-is:           wai-handler-devel.hs
 
 Executable           wai-handler-devel-unwatched
   Build-Depends:     cmdargs >= 0.4
-  ghc-options:       -Wall -O2 -threaded
+  ghc-options:       -Wall -threaded
   main-is:           wai-handler-devel-unwatched.hs