diff --git a/scripts/dist.clj b/scripts/dist.clj
index a704de7048..fa94adf424 100644
--- a/scripts/dist.clj
+++ b/scripts/dist.clj
@@ -17,7 +17,7 @@
     :source-map "resources/public/js/main.js.map"
     :static-fns true
     :pretty-print true
-    :language-in  :ecmascript5
+    :language-in  :ecmascript6
     :language-out :ecmascript5
     :verbose true})
   (println "... done. Elapsed" (/ (- (System/nanoTime) start) 1e9) "seconds"))