diff --git a/Gemfile.lock b/Gemfile.lock
index 020280c14be..8ceb4123d08 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -446,7 +446,7 @@ GEM
       uri
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
-    net-imap (0.5.1)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)