diff --git a/Gemfile.lock b/Gemfile.lock
index cc5e5a1..922b069 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,8 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.6.2)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -42,6 +43,7 @@ GEM
     rubocop-ast (1.24.1)
       parser (>= 3.1.1.0)
     ruby-progressbar (1.11.0)
+    strscan (3.1.0)
     unicode-display_width (2.4.2)
     yard (0.9.36)