diff --git a/appengine/standard-storage/Gemfile.lock b/appengine/standard-storage/Gemfile.lock
index 3cd276f93..5edbdc4cf 100644
--- a/appengine/standard-storage/Gemfile.lock
+++ b/appengine/standard-storage/Gemfile.lock
@@ -93,8 +93,8 @@ GEM
       trailblazer-option (>= 0.1.1, < 0.2.0)
       uber (< 0.2.0)
     retriable (3.1.2)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.6)
+      strscan
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)