diff --git a/codex.cabal b/codex.cabal
--- a/codex.cabal
+++ b/codex.cabal
@@ -1,5 +1,5 @@
 name:                codex
-version:             0.0.1.5
+version:             0.0.1.6
 synopsis:            A ctags file generator for cabal project dependencies.
 description:         
   This tool download and cache the source code of packages in your local hackage,
diff --git a/src/Codex.hs b/src/Codex.hs
--- a/src/Codex.hs
+++ b/src/Codex.hs
@@ -93,7 +93,7 @@
 
 tags :: Codex -> PackageIdentifier -> Action FilePath
 tags cx i = do
-  tryIO . createProcess $ shell command
+  tryIO $ system command
   return tags where
     sources = packageSources cx i
     tags = packageTags cx i