diff --git a/logto/Gemfile.lock b/logto/Gemfile.lock
index 18735de..3f4ed7c 100644
--- a/logto/Gemfile.lock
+++ b/logto/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
     jwt (2.8.1)
       base64
     public_suffix (5.0.5)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)