diff --git a/Gemfile.lock b/Gemfile.lock
index 7383cd3e..883f46fc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -248,7 +248,8 @@ GEM
       timeout
     net-sftp (4.0.0)
       net-ssh (>= 5.0.0, < 8.0.0)
-    net-smtp (0.5.0)
+    net-smtp (0.5.1)
+      net-protocol
     net-ssh (7.2.1)
     newrelic_rpm (9.6.0)
       base64