diff --git a/appengine/flexible/ruby31-and-earlier/rails-cloudsql-postgres/Gemfile.lock b/appengine/flexible/ruby31-and-earlier/rails-cloudsql-postgres/Gemfile.lock
index bbcd21f08..5cf189458 100644
--- a/appengine/flexible/ruby31-and-earlier/rails-cloudsql-postgres/Gemfile.lock
+++ b/appengine/flexible/ruby31-and-earlier/rails-cloudsql-postgres/Gemfile.lock
@@ -42,8 +42,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.8.5)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     appengine (0.7.0)
       google-cloud-env (~> 1.4)
       google-serverless-exec (>= 0.1, < 2.a)
@@ -183,7 +183,7 @@ GEM
       racc (~> 1.4)
     os (1.1.4)
     pg (1.5.4)
-    public_suffix (5.0.3)
+    public_suffix (7.0.5)
     puma (3.12.6)
     racc (1.7.3)
     rack (2.2.8.1)