diff --git a/appengine/rails-cloudsql-postgres/Gemfile.lock b/appengine/rails-cloudsql-postgres/Gemfile.lock
index 66856ecc5..600b7345a 100644
--- a/appengine/rails-cloudsql-postgres/Gemfile.lock
+++ b/appengine/rails-cloudsql-postgres/Gemfile.lock
@@ -215,7 +215,7 @@ GEM
     minitest (5.25.5)
     multi_json (1.15.0)
     mutex_m (0.3.0)
-    net-imap (0.4.24)
+    net-imap (0.5.15)
       date
       net-protocol
     net-pop (0.1.2)