diff --git a/Gemfile.lock b/Gemfile.lock
index fc31a04..f1fce52 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -162,7 +162,7 @@ GEM
     marcel (1.1.0)
     matrix (0.4.3)
     mini_mime (1.1.5)
-    minitest (6.0.3)
+    minitest (6.0.4)
       drb (~> 2.0)
       prism (~> 1.5)
     msgpack (1.8.0)