diff --git a/Gemfile.lock b/Gemfile.lock
index e25bc328a..1697c9194 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -183,7 +183,7 @@ GEM
     matrix (0.4.3)
     method_source (1.1.0)
     mini_mime (1.1.5)
-    minitest (5.26.2)
+    minitest (5.27.0)
     net-imap (0.5.12)
       date
       net-protocol