diff --git a/Gemfile.lock b/Gemfile.lock
index 5a160f9..7fed85c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
     rack-test (2.1.0)
       rack (>= 1.3)
     rake (13.0.5)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)