diff --git a/Gemfile.lock b/Gemfile.lock
index 6ff9f7d1..1bdb4ad9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -257,7 +257,7 @@ GEM
       minitest (>= 5.0)
       ruby-progressbar
     msgpack (1.8.0)
-    net-imap (0.6.4)
+    net-imap (0.6.4.1)
       date
       net-protocol
     net-pop (0.1.2)