diff --git a/Gemfile.lock b/Gemfile.lock
index 94b03832..f77f8780 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -198,7 +198,7 @@ GEM
     minitest (5.25.1)
     mousetrap-rails (1.4.6)
     mysql2 (0.5.6)
-    net-imap (0.4.17)
+    net-imap (0.5.0)
       date
       net-protocol
     net-pop (0.1.2)