diff --git a/Gemfile.lock b/Gemfile.lock
index 63a1dae..cc3a636 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -240,7 +240,7 @@ GEM
     multi_json (1.15.0)
     net-http (0.6.0)
       uri
-    net-imap (0.5.5)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)