diff --git a/Gemfile.lock b/Gemfile.lock
index 475d06c..4557f06 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,7 +141,7 @@ GEM
     multi_json (1.12.2)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mysql2 (0.4.10)
+    mysql2 (0.5.1)
     net-http-persistent (2.9.4)
     netrc (0.11.0)
     nokogiri (1.7.2)