diff --git a/Gemfile.lock b/Gemfile.lock
index 4a8f5fc..5a0ff0a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -155,7 +155,7 @@ GEM
     marcel (1.0.2)
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
-    minitest (5.21.2)
+    minitest (5.22.0)
     mocha (2.1.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)