1 files changed, 5 insertions, 0 deletions
diff --git a/mrblib/kernel.rb b/mrblib/kernel.rb
index 8ccf3cfa8..0277a1b83 100644
--- a/mrblib/kernel.rb
+++ b/mrblib/kernel.rb
@@ -43,4 +43,9 @@ module Kernel
       yield
     end
   end
+
+  # 11.4.4 Step c)
+  def !~(y)
+    !(self =~ y)
+  end
 end