diff --git a/Gemfile.lock b/Gemfile.lock
index 5cc7cf8..fed2332 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -153,7 +153,7 @@ GEM
     mini_portile2 (2.6.1)
     minitest (5.15.0)
     msgpack (1.4.2)
-    net-imap (0.2.2)
+    net-imap (0.2.3)
       digest
       net-protocol
       strscan