diff --git a/Gemfile.lock b/Gemfile.lock
index 702d5a75..b1fc48fc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -273,7 +273,7 @@ GEM
       uri
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
-    net-imap (0.4.12)
+    net-imap (0.4.13)
       date
       net-protocol
     net-pop (0.1.2)