diff --git a/tests/Gemfile.lock b/tests/Gemfile.lock
index 5137c5f..9655e4a 100644
--- a/tests/Gemfile.lock
+++ b/tests/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
       rack (>= 1.3)
     rake (13.0.6)
     regexp_parser (2.9.0)
-    rexml (3.3.9)
+    rexml (3.4.2)
     vcr (6.2.0)
     webmock (3.23.0)
       addressable (>= 2.8.0)