diff --git a/setup.py b/setup.py
index ebad1d7..389202d 100644
--- a/setup.py
+++ b/setup.py
@@ -73,21 +73,21 @@ def run(self):
         ],
         ':python_version >= "3.0" and python_version < "3.6"': [
             'cryptography>=39.0.1',
-            'dnspython3>=1.15.0',
+            'dnspython>=2.0.0',
             'jsonschema>=4.0.0',
             'requests>=2.27.1',
             'validators>=0.20.0',
         ],
         ':python_version >= "3.6" and python_version < "3.7"': [
             'cryptography>=40.0.2',
-            'dnspython3>=1.15.0',
+            'dnspython>=2.0.0',
             'jsonschema>=4.0.0',
             'requests>=2.27.1',
             'validators>=0.20.0',
         ],
         ':python_version >= "3.7"': [
             'cryptography>=42.0.3',
-            'dnspython3>=1.15.0',
+            'dnspython>=2.0.0',
             'jsonschema>=4.0.0',
             'requests>=2.31.0',
             'validators>=0.20.0',