diff --git a/Gemfile.lock b/Gemfile.lock
index 9e74964..e4b5f00 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,8 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.8.1)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -85,6 +86,7 @@ GEM
     ruby-progressbar (1.13.0)
     sqlite3 (1.6.4)
       mini_portile2 (~> 2.8.0)
+    strscan (3.1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.4.2)