diff --git a/Gemfile.lock b/Gemfile.lock
index 4cf818c..00df285 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -155,7 +155,7 @@ GEM
     mini_mime (1.1.5)
     minitest (5.25.4)
     msgpack (1.7.5)
-    net-imap (0.5.5)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)