diff --git a/app/Gemfile.lock b/app/Gemfile.lock
index 18420c8..eb5ff08 100644
--- a/app/Gemfile.lock
+++ b/app/Gemfile.lock
@@ -140,7 +140,7 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.6)
     minitest (5.22.3)
-    msgpack (1.7.2)
+    msgpack (1.8.2)
     mutex_m (0.2.0)
     net-imap (0.4.10)
       date