diff --git a/Gemfile.lock b/Gemfile.lock
index 7abe47b..84b8628 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -113,7 +113,7 @@ GEM
       multi_xml (>= 0.5.2)
     i18n (0.7.0)
     json (1.8.3)
-    listen (3.1.1)
+    listen (3.0.6)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9.7)
     little-plugger (1.1.4)