--- a/setup.py	2018-01-16 11:19:53.000000000 +0800
+++ b/setup.py	2018-01-16 11:21:22.717644865 +0800
@@ -62,7 +62,7 @@
     'provides': ['dns'],
     'extras_require': {
         'IDNA': ['idna>=2.1'],
-        'DNSSEC': ['pycrypto>=2.6.1', 'ecdsa>=0.13'],
+        'DNSSEC': ['pycryptodome', 'ecdsa>=0.13'],
         },
     }