diff --git a/shake-ext.cabal b/shake-ext.cabal
--- a/shake-ext.cabal
+++ b/shake-ext.cabal
@@ -1,5 +1,5 @@
 name:                shake-ext
-version:             1.2.0.2
+version:             1.2.0.3
 synopsis:            Helper functions for linting with shake 
 description:         This package provides several linters out of the box, as well as functionality for building ATS source files with [shake](http://shakebuild.com/).
 homepage:            https://hub.darcs.net/vmchale/shake-ext
@@ -29,7 +29,7 @@
                      , Development.Shake.Man
   build-depends:       base >= 4.10 && < 5
                      , shake
-                     , language-ats
+                     , language-ats >= 0.1.0.5
                      , mtl
                      , composition-prelude
                      , directory
diff --git a/src/Development/Shake/ATS.hs b/src/Development/Shake/ATS.hs
--- a/src/Development/Shake/ATS.hs
+++ b/src/Development/Shake/ATS.hs
@@ -71,7 +71,7 @@
         path <- fromMaybe "" <$> getEnv "PATH"
         let toLibs = fmap ("-l" <>)
         command
-            [EchoStderr False, AddEnv "PATSHOME" home, AddEnv "PATH" (home ++ ":" ++ path)]
+            [EchoStderr False, AddEnv "PATSHOME" home, AddEnv "PATH" (home ++ "/bin:" ++ path)]
             (home ++ "/bin/patscc")
             ([sourceFile, "-atsccomp", "gcc -flto -I" ++ h ++ "/ccomp/runtime/ -I" ++ h, gcFlag gc, "-o", out, "-cleanaft", "-O2", "-mtune=native", "-flto"] <> toLibs libs)