diff --git a/shakers.cabal b/shakers.cabal
--- a/shakers.cabal
+++ b/shakers.cabal
@@ -1,5 +1,5 @@
 name:                  shakers
-version:               0.0.6
+version:               0.0.7
 synopsis:              Shake helpers.
 description:           Primitive helpers for Shake files.
 homepage:              https://github.com/swift-nav/shakers
diff --git a/src/Development/Shakers.hs b/src/Development/Shakers.hs
--- a/src/Development/Shakers.hs
+++ b/src/Development/Shakers.hs
@@ -205,7 +205,7 @@
 getHashedVersion :: FilePath -> [FilePattern] -> Action String
 getHashedVersion dir pats = do
   files <- getDirectoryFiles dir pats
-  liftIO $ getHashedShakeVersion files
+  liftIO $ getHashedShakeVersion $ (dir </>) <$> files
 
 -- | Haskell source rules
 --