1 files changed, 4 insertions, 0 deletions
diff --git a/lib/pathname.rb b/lib/pathname.rb
index 1bc0063bb0..86f0f54800 100644
--- a/lib/pathname.rb
+++ b/lib/pathname.rb
@@ -1063,6 +1063,10 @@ class Pathname    # * mixed *
   end
 end
 
+class Pathname
+  undef =~
+end
+
 module Kernel
   # create a pathname object.
   #