diff --git a/Gemfile.lock b/Gemfile.lock
index eee679e..f06cd3b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,8 @@ GEM
     rainbow (3.0.0)
     rake (13.0.1)
     regexp_parser (1.7.0)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
@@ -35,6 +36,7 @@ GEM
     rubocop-ast (0.0.3)
       parser (>= 2.7.0.1)
     ruby-progressbar (1.10.1)
+    strscan (3.1.0)
     unicode-display_width (1.7.0)
 
 PLATFORMS