diff --git a/Gemfile.lock b/Gemfile.lock
index 0644c4e0..f63c4bae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -246,7 +246,7 @@ GEM
       ruby-progressbar
     msgpack (1.8.0)
     mutex_m (0.3.0)
-    net-imap (0.5.6)
+    net-imap (0.5.8)
       date
       net-protocol
     net-pop (0.1.2)