diff --git a/bin/ocran b/bin/ocran
index 5fc3620..6d39905 100644
--- a/bin/ocran
+++ b/bin/ocran
@@ -111,7 +111,11 @@ module Ocran
     end
   end
 
-  ::Pathname.prepend(RefinePathname)
+  refine Pathname do
+    import_methods RefinePathname
+  end
+  using Ocran
+  # ::Pathname.prepend(RefinePathname)
 
   IGNORE_MODULE_NAMES = /\A(enumerator.so|rational.so|complex.so|fiber.so|thread.rb|ruby2_keywords.rb)\z/