diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright Vanessa McHale (c) 2018
+Copyright Vanessa McHale (c) 2018-2019
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
diff --git a/shake-ext.cabal b/shake-ext.cabal
--- a/shake-ext.cabal
+++ b/shake-ext.cabal
@@ -1,9 +1,9 @@
 cabal-version: 1.18
 name: shake-ext
-version: 3.1.0.1
+version: 3.1.0.2
 license: BSD3
 license-file: LICENSE
-copyright: Copyright: (c) 2018 Vanessa McHale
+copyright: Copyright: (c) 2018-2019 Vanessa McHale
 maintainer: vamchale@gmail.com
 author: Vanessa McHale
 bug-reports: https://hub.darcs.net/vmchale/ats/issues
diff --git a/src/Development/Shake/Linters.hs b/src/Development/Shake/Linters.hs
--- a/src/Development/Shake/Linters.hs
+++ b/src/Development/Shake/Linters.hs
@@ -40,7 +40,7 @@
 checkIdempotent s p = do
     contents <- liftIO $ readFile p
     (Stdout out) <- cmd (s ++ " " ++ p)
-    when (trim contents /= trim out) (error $ "formatter " ++ s ++ " is not fully applied!")
+    when (trim contents /= trim out) (error $ "formatter " ++ s ++ " is not fully applied to file " ++ p ++ "!")
 
 -- | Check that given files are formatted according to @stylish-haskell@
 stylishHaskell :: [FilePath] -> Action ()