diff --git a/Gemfile.lock b/Gemfile.lock
index f1efa961c..9c7058afe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -497,7 +497,7 @@ GEM
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (1.5.0)
-    unicorn (5.5.0)
+    unicorn (5.5.1)
       kgio (~> 2.6)
       raindrops (~> 0.7)
     uniform_notifier (1.12.1)