diff --git a/Gemfile.lock b/Gemfile.lock
index c49bbdd7355..ff3f26cdfd8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -263,7 +263,7 @@ GEM
     mustache (1.1.1)
     net-http (0.6.0)
       uri
-    net-imap (0.5.4)
+    net-imap (0.5.5)
       date
       net-protocol
     net-pop (0.1.2)