diff -r 1e59f3be6a11 -r ccad96890edd whois/parser.py
--- a/whois/parser.py	Wed Sep 28 19:55:17 2016 +0800
+++ b/whois/parser.py	Fri Nov 25 20:38:48 2016 +0800
@@ -157,6 +157,11 @@
         handler = lambda e: str(e)
         return json.dumps(self, indent=2, default=handler)
 
+    def __getstate__(self):
+        return self.__dict__
+
+    def __setstate__(self, state):
+        self.__dict__ = state
 
     @staticmethod
     def load(domain, text):