diff --git a/Gemfile.lock b/Gemfile.lock
index f56ecbe1..0bf3c0c2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -331,7 +331,7 @@ GEM
       railties (>= 3.0)
     multi_json (1.15.0)
     multi_xml (0.6.0)
-    mysql2 (0.5.3)
+    mysql2 (0.5.4)
     net-imap (0.2.3)
       digest
       net-protocol