diff --git a/Gemfile.lock b/Gemfile.lock
index 08ea36b8..0911429c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -308,7 +308,7 @@ GEM
     multi_xml (0.7.1)
       bigdecimal (~> 3.1)
     mutex_m (0.3.0)
-    net-imap (0.5.5)
+    net-imap (0.5.7)
       date
       net-protocol
     net-pop (0.1.2)