diff --git a/Gemfile.lock b/Gemfile.lock
index f303a2a..3aa54a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -175,7 +175,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0221)
     mini_portile2 (2.0.0)
-    minitest (5.8.4)
+    minitest (5.9.0)
     multi_json (1.12.0)
     multi_test (0.1.2)
     mysql2 (0.4.4)