Rakefile in simple-navigation-4.2.0 vs Rakefile in simple-navigation-4.3.0

@@ -15,9 +15,10 @@
     rails-3-2-stable
     rails-4-1-stable
     rails-4-2-stable
     rails-5-2-stable
     rails-6-0-stable
+    rails-6-1-stable
   ]
 
   mappers.each do |gemfile|
     desc "Run Tests against #{gemfile}"
     task gemfile do