diff --git a/Gemfile.lock b/Gemfile.lock
index 3454b6f..667eb24 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -143,7 +143,7 @@ GEM
     minitest (5.25.4)
     msgpack (1.7.5)
     mutex_m (0.3.0)
-    net-imap (0.5.6)
+    net-imap (0.5.7)
       date
       net-protocol
     net-pop (0.1.2)