diff --git a/cloud-sql/mysql/activerecord/Gemfile.lock b/cloud-sql/mysql/activerecord/Gemfile.lock
index 7de0866f2..00904da8d 100644
--- a/cloud-sql/mysql/activerecord/Gemfile.lock
+++ b/cloud-sql/mysql/activerecord/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.6)
     minitest (5.25.5)
-    msgpack (1.7.2)
+    msgpack (1.8.2)
     mutex_m (0.3.0)
     mysql2 (0.5.5)
     net-imap (0.4.10)