diff --git a/Gemfile.lock b/Gemfile.lock
index df8a4e5..be3bfb8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,7 +31,8 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.6.0)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)
@@ -66,6 +67,7 @@ GEM
       rubocop (= 1.35.1)
       rubocop-performance (= 1.14.3)
     strings-ansi (0.2.0)
+    strscan (3.1.0)
     tty-color (0.6.0)
     tty-cursor (0.7.1)
     tty-progressbar (0.18.2)
@@ -88,6 +90,7 @@ PLATFORMS
   x86_64-darwin-19
   x86_64-darwin-20
   x86_64-darwin-21
+  x86_64-linux
 
 DEPENDENCIES
   manymessage!