diff --git a/Gemfile.lock b/Gemfile.lock
index d515f83..edef41e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,8 @@ GEM
     rainbow (3.1.1)
     rake (13.0.1)
     regexp_parser (2.8.1)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
@@ -52,6 +53,7 @@ GEM
     rubocop-ast (1.29.0)
       parser (>= 3.2.1.0)
     ruby-progressbar (1.13.0)
+    strscan (3.1.0)
     unicode-display_width (1.8.0)
 
 PLATFORMS