diff --git a/Gemfile.lock b/Gemfile.lock
index 6837349..c804544 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -155,7 +155,7 @@ GEM
       net-imap
       net-pop
       net-smtp
-    marcel (1.0.3)
+    marcel (1.0.4)
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
     minitest (5.22.2)