diff --git a/Gemfile.lock b/Gemfile.lock
index abb00717852fa..82e5220708759 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -482,7 +482,7 @@ GEM
       uri
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
-    net-imap (0.4.19)
+    net-imap (0.4.20)
       date
       net-protocol
     net-pop (0.1.2)