diff --git a/Gemfile.lock b/Gemfile.lock
index 422ecd984c..1c1e1b665f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -668,7 +668,7 @@ GEM
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (1.7.0)
-    unicorn (5.5.5)
+    unicorn (5.6.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
     unicorn-rails (2.2.1)