diff --git a/Gemfile.lock b/Gemfile.lock
index 9a7d32c..a7a2887 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.3)
+    rack (3.0.9.1)
     rainbow (3.0.0)
     rake (13.0.3)
     regexp_parser (2.0.3)
@@ -91,6 +91,7 @@ GEM
 PLATFORMS
   x86_64-darwin-19
   x86_64-darwin-20
+  x86_64-linux
 
 DEPENDENCIES
   armitage-rubocop (~> 1.7)