diff --git a/Gemfile.lock b/Gemfile.lock
index 7addfc4..2df2e5b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -145,7 +145,7 @@ GEM
     marcel (1.1.0)
     matrix (0.4.3)
     mini_mime (1.1.5)
-    minitest (6.0.2)
+    minitest (6.0.4)
       drb (~> 2.0)
       prism (~> 1.5)
     msgpack (1.8.0)