diff --git a/Gemfile.lock b/Gemfile.lock
index 1d3e0167a..5496e0b16 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -105,7 +105,7 @@ GEM
     capistrano3-unicorn (0.2.1)
       capistrano (~> 3.1, >= 3.1.0)
     chronic (0.10.2)
-    cityhash (0.8.1)
+    cityhash (0.9.0)
     coderay (1.1.1)
     colorize (0.7.7)
     crack (0.4.3)