diff --git a/Gemfile.lock b/Gemfile.lock
index 97ac6eb..b431b9d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
     rainbow (3.0.0)
     rake (13.0.6)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.3.9)
     rubocop (1.23.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)