diff --git a/Gemfile.lock b/Gemfile.lock
index 13ddcb2..c9ade6e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
     multi_json (1.11.2)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    mysql2 (0.3.20)
+    mysql2 (0.4.0)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (2.9.2)