diff --git a/Gemfile.lock b/Gemfile.lock
index f9f7bc68..84920b51 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -182,7 +182,7 @@ GEM
       ruby2_keywords (~> 0.0.1)
     mutex_m (0.2.0)
     mysql2 (0.5.5)
-    net-imap (0.4.8)
+    net-imap (0.4.9)
       date
       net-protocol
     net-pop (0.1.2)