diff --git a/Annex/Content.hs b/Annex/Content.hs
index 0b665d4dcc..2ba3871051 100644
--- a/Annex/Content.hs
+++ b/Annex/Content.hs
@@ -50,6 +50,7 @@ module Annex.Content (
 ) where
 
 import System.IO.Unsafe (unsafeInterleaveIO)
+import System.PosixCompat.Files
 import qualified Data.Set as S
 
 import Annex.Common
@@ -84,7 +85,6 @@ import Types.Key
 import Annex.UUID
 import Annex.InodeSentinal
 import Utility.InodeCache
-import Utility.PosixFiles
 
 {- Checks if a given key's content is currently present. -}
 inAnnex :: Key -> Annex Bool
diff --git a/Annex/Fixup.hs b/Annex/Fixup.hs
index 6a14f22bc9..4b5149d0ab 100644
--- a/Annex/Fixup.hs
+++ b/Annex/Fixup.hs
@@ -15,11 +15,11 @@ import qualified Git.BuildVersion
 import Utility.Path
 import Utility.SafeCommand
 import Utility.Directory
-import Utility.PosixFiles
 import Utility.Exception
 
 import System.IO
 import System.FilePath
+import System.PosixCompat.Files
 import Data.List
 import Control.Monad
 import Control.Monad.IfElse
diff --git a/Common.hs b/Common.hs
index ba8382613b..8ff1b718ae 100644
--- a/Common.hs
+++ b/Common.hs
@@ -18,6 +18,7 @@ import System.IO as X hiding (FilePath)
 import System.Posix.IO as X hiding (createPipe)
 #endif
 import System.Exit as X
+import System.PosixCompat.Files as X hiding (fileSize)
 
 import Utility.Misc as X
 import Utility.Exception as X
@@ -28,7 +29,6 @@ import Utility.Directory as X
 import Utility.Monad as X
 import Utility.Data as X
 import Utility.Applicative as X
-import Utility.PosixFiles as X hiding (fileSize)
 import Utility.FileSize as X
 import Utility.Network as X
 import Utility.Split as X
diff --git a/Utility/DirWatcher/Win32Notify.hs b/Utility/DirWatcher/Win32Notify.hs
index 3428f3db37..a2f40128fb 100644
--- a/Utility/DirWatcher/Win32Notify.hs
+++ b/Utility/DirWatcher/Win32Notify.hs
@@ -11,7 +11,7 @@ import Common hiding (isDirectory)
 import Utility.DirWatcher.Types
 
 import System.Win32.Notify
-import qualified Utility.PosixFiles as Files
+import qualified System.PosixCompat.Files as Files
 
 watchDir :: FilePath -> (FilePath -> Bool) -> Bool -> WatchHooks -> IO WatchManager
 watchDir dir ignored scanevents hooks = do
diff --git a/Utility/Directory.hs b/Utility/Directory.hs
index c24f36da56..895581dff1 100644
--- a/Utility/Directory.hs
+++ b/Utility/Directory.hs
@@ -16,6 +16,7 @@ module Utility.Directory (
 import System.IO.Error
 import Control.Monad
 import System.FilePath
+import System.PosixCompat.Files
 import Control.Applicative
 import Control.Concurrent
 import System.IO.Unsafe (unsafeInterleaveIO)
@@ -31,7 +32,6 @@ import Control.Monad.IfElse
 #endif
 
 import Utility.SystemDirectory
-import Utility.PosixFiles
 import Utility.Tmp
 import Utility.Exception
 import Utility.Monad
diff --git a/Utility/FileMode.hs b/Utility/FileMode.hs
index d9a269448f..370bcf62da 100644
--- a/Utility/FileMode.hs
+++ b/Utility/FileMode.hs
@@ -15,7 +15,7 @@ module Utility.FileMode (
 import System.IO
 import Control.Monad
 import System.PosixCompat.Types
-import Utility.PosixFiles
+import System.PosixCompat.Files
 #ifndef mingw32_HOST_OS
 import System.Posix.Files
 import Control.Monad.IO.Class (liftIO)
diff --git a/Utility/PosixFiles.hs b/Utility/PosixFiles.hs
deleted file mode 100644
index 37253da29b..0000000000
--- a/Utility/PosixFiles.hs
+++ /dev/null
@@ -1,42 +0,0 @@
-{- POSIX files (and compatablity wrappers).
- -
- - This is like System.PosixCompat.Files, but with a few fixes.
- -
- - Copyright 2014 Joey Hess <id@joeyh.name>
- -
- - License: BSD-2-clause
- -}
-
-{-# LANGUAGE CPP #-}
-{-# OPTIONS_GHC -fno-warn-tabs #-}
-
-module Utility.PosixFiles (
-	module X,
-	rename
-) where
-
-import System.PosixCompat.Files as X hiding (rename)
-
-#ifndef mingw32_HOST_OS
-import System.Posix.Files (rename)
-#else
-import qualified System.Win32.File as Win32
-import qualified System.Win32.HardLink as Win32
-#endif
-
-{- System.PosixCompat.Files.rename on Windows calls renameFile,
- - so cannot rename directories. 
- -
- - Instead, use Win32 moveFile, which can. It needs to be told to overwrite
- - any existing file. -}
-#ifdef mingw32_HOST_OS
-rename :: FilePath -> FilePath -> IO ()
-rename src dest = Win32.moveFileEx src dest Win32.mOVEFILE_REPLACE_EXISTING
-#endif
-
-{- System.PosixCompat.Files.createLink throws an error, but windows
- - does support hard links. -}
-#ifdef mingw32_HOST_OS
-createLink :: FilePath -> FilePath -> IO ()
-createLink = Win32.createHardLink
-#endif
diff --git a/Utility/Tmp.hs b/Utility/Tmp.hs
index ca611e0b4c..7255c141e5 100644
--- a/Utility/Tmp.hs
+++ b/Utility/Tmp.hs
@@ -15,13 +15,13 @@ import Control.Monad.IfElse
 import System.FilePath
 import System.Directory
 import Control.Monad.IO.Class
+import System.PosixCompat.Files
 #ifndef mingw32_HOST_OS
 import System.Posix.Temp (mkdtemp)
 #endif
 
 import Utility.Exception
 import Utility.FileSystemEncoding
-import Utility.PosixFiles
 
 type Template = String
 
diff --git a/git-annex.cabal b/git-annex.cabal
index f16e682cfb..3363d12a8e 100644
--- a/git-annex.cabal
+++ b/git-annex.cabal
@@ -380,7 +380,11 @@ Executable git-annex
     Build-Depends: network (< 2.6), network (>= 2.4)
 
   if (os(windows))
-    Build-Depends: Win32 (== 2.3.1.1), Win32-extras, unix-compat (>= 0.4.1.3), setenv,
+    Build-Depends:
+      Win32 (== 2.3.1.1),
+      Win32-extras,
+      unix-compat (>= 0.5),
+      setenv,
       process (>= 1.4.2.0)
   else
     Build-Depends: unix
@@ -1026,7 +1030,6 @@ Executable git-annex
     Utility.PartialPrelude
     Utility.Path
     Utility.Percentage
-    Utility.PosixFiles
     Utility.Process
     Utility.Process.Shim
     Utility.QuickCheck