diff --git a/hjsmin.cabal b/hjsmin.cabal
--- a/hjsmin.cabal
+++ b/hjsmin.cabal
@@ -1,5 +1,5 @@
 name:            hjsmin
-version:         0.2.0.0
+version:         0.2.0.1
 license:         BSD3
 license-file:    LICENSE
 author:          Alan Zimmerman <alan.zimm@gmail.com>
diff --git a/hjsmin.hs b/hjsmin.hs
--- a/hjsmin.hs
+++ b/hjsmin.hs
@@ -1,5 +1,8 @@
+{-# LANGUAGE CPP #-}
 module Main where
 
+#include "cabal_macros.h"
+
 import Options.Applicative
 import Text.Jasmine
 
@@ -18,7 +21,10 @@
   where
     opts = info (helper <*> options)
         ( fullDesc
-            <> progDesc "Minify JavaScript files."
+            <> progDesc
+                ( "Minify JavaScript files (using language-javascript version "
+                ++ languageJavascriptVersion ++ ")."
+                )
             <> header "hjsmin - a simple command-line interface to the 'hjsmin' library"
             )
 
@@ -39,3 +45,7 @@
     case outputFile o of
         Nothing -> C8.putStrLn minified
         Just f  -> B.writeFile f minified
+
+
+languageJavascriptVersion :: String
+languageJavascriptVersion = VERSION_language_javascript