diff --git a/Gemfile.lock b/Gemfile.lock
index 20ce2a81b58..2ce48bcd135 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -243,7 +243,7 @@ GEM
     mustache (1.1.1)
     net-http (0.4.1)
       uri
-    net-imap (0.4.9)
+    net-imap (0.4.9.1)
       date
       net-protocol
     net-pop (0.1.2)