diff --git a/Gemfile.lock b/Gemfile.lock
index 0cfb5b5..8fab64f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,7 +63,8 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.8.1)
-    rexml (3.2.6)
+    rexml (3.3.6)
+      strscan
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -93,6 +94,7 @@ GEM
       rubocop-ast (>= 0.7.1)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
+    strscan (3.1.0)
     unicode-display_width (1.8.0)
     zeitwerk (2.6.12)