diff --git a/Gemfile.lock b/Gemfile.lock
index 8c81a96..a5997a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -207,7 +207,7 @@ GEM
     multi_xml (0.7.1)
       bigdecimal (~> 3.1)
     multipart-post (2.4.1)
-    net-imap (0.5.2)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)