diff --git a/Gemfile.lock b/Gemfile.lock
index 49ac2f7..9e43208 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,7 +47,7 @@ GEM
     rake (13.0.6)
     randexp (0.1.7)
     regexp_parser (2.8.2)
-    rexml (3.2.6)
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)