diff --git a/Gemfile.lock b/Gemfile.lock
index a03205a875..de7c5d643a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -413,7 +413,7 @@ GEM
       unf_ext
     unf_ext (0.0.7.7)
     unicode-display_width (1.7.0)
-    unicorn (5.6.0)
+    unicorn (5.7.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
     uniform_notifier (1.13.0)