diff --git a/Gemfile.lock b/Gemfile.lock
index 22e56cd..ab5034c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -167,7 +167,7 @@ GEM
     minitest (5.10.3)
     multi_json (1.12.1)
     multi_test (0.1.2)
-    mysql2 (0.4.8)
+    mysql2 (0.4.9)
     nenv (0.3.0)
     nio4r (2.1.0)
     nokogiri (1.8.0)