diff --git a/lib/dalli/socket.rb b/lib/dalli/socket.rb
index 26828217..d446112b 100644
--- a/lib/dalli/socket.rb
+++ b/lib/dalli/socket.rb
@@ -50,12 +50,16 @@ def options
         io.options
       end
 
-      def wait_readable(timeout)
-        IO.select([self], nil, nil, timeout)
+      unless method_defined?(:wait_readable)
+        def wait_readable(timeout = nil)
+          to_io.wait_readable(timeout)
+        end
       end
 
-      def wait_writable(timeout)
-        IO.select(nil, [self], nil, timeout)
+      unless method_defined?(:wait_writable)
+        def wait_writable(timeout = nil)
+          to_io.wait_writable(timeout)
+        end
       end
     end