diff --git a/Yesod/Helpers/Static.hs b/Yesod/Helpers/Static.hs
--- a/Yesod/Helpers/Static.hs
+++ b/Yesod/Helpers/Static.hs
@@ -73,6 +73,8 @@
 import Test.HUnit hiding (Test)
 #endif
 
+import System.IO (withBinaryFile, IOMode (ReadMode))
+
 newtype Static = Static StaticSettings
 
 -- | Default value of 'Static' for a given file folder.
@@ -165,7 +167,8 @@
         let name = mkName $ intercalate "_" $ map (adjust . map replace') f
         f' <- [|map pack $(lift f)|]
         let sr = ConE $ mkName "StaticRoute"
-        hash <- qRunIO $ fmap base64md5 $ L.readFile $ fp ++ '/' : intercalate "/" f
+        hash <- qRunIO . calcHash $ fp ++ '/' : intercalate "/" f
+
         pack' <- [|pack|]
         qs <- [|[(pack $(lift hash), mempty)]|]
         return
@@ -204,3 +207,10 @@
     go '+' = '-'
     go '/' = '_'
     go c   = c
+
+calcHash :: FilePath -> IO String
+calcHash fname =
+    withBinaryFile fname ReadMode hashHandle
+  where
+    hashHandle h = do s <- L.hGetContents h
+                      return $! base64md5 s
diff --git a/yesod-static.cabal b/yesod-static.cabal
--- a/yesod-static.cabal
+++ b/yesod-static.cabal
@@ -1,5 +1,5 @@
 name:            yesod-static
-version:         0.1.0
+version:         0.1.0.1
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>