diff --git a/Gemfile.lock b/Gemfile.lock
index 02b7c2bde..e1865b6ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -379,8 +379,8 @@ GEM
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
     kgio (2.9.3)
-    listen (2.9.0)
-      celluloid (>= 0.15.2)
+    listen (2.10.0)
+      celluloid (~> 0.16.0)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
     loofah (2.0.1)