diff --git a/Gemfile.lock b/Gemfile.lock
index 844a573..da89096 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,8 @@ GEM
     rainbow (3.0.0)
     rake (13.0.3)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -64,6 +65,7 @@ GEM
       rubocop-ast (>= 1.1.0)
     ruby-progressbar (1.11.0)
     safe_yaml (1.0.5)
+    strscan (3.1.0)
     unicode-display_width (2.0.0)
     webmock (3.8.0)
       addressable (>= 2.3.6)
@@ -72,6 +74,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-19
+  x86_64-linux
 
 DEPENDENCIES
   pry-byebug