diff --git a/Gemfile.lock b/Gemfile.lock
index 98a035ed0..d6f473ab9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -239,7 +239,7 @@ GEM
     mysql2 (0.5.5)
     net-http (0.4.1)
       uri
-    net-imap (0.3.8)
+    net-imap (0.3.9)
       date
       net-protocol
     net-pop (0.1.2)