diff --git a/Gemfile.lock b/Gemfile.lock
index b2b5c14..e3d06c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -257,7 +257,7 @@ GEM
     mustermann-grape (1.0.2)
       mustermann (>= 1.0.0)
     mutex_m (0.3.0)
-    net-imap (0.5.5)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)