diff --git a/Gemfile.lock b/Gemfile.lock
index 8e3fa9b..6588f20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,7 +42,7 @@ GEM
     rainbow (3.1.1)
     rake (13.2.1)
     regexp_parser (2.9.3)
-    rexml (3.3.9)
+    rexml (3.4.0)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)