diff --git a/.github/workflows/test_and_publish.yaml b/.github/workflows/test_and_publish.yaml
index daa2a73..453ace1 100644
--- a/.github/workflows/test_and_publish.yaml
+++ b/.github/workflows/test_and_publish.yaml
@@ -18,8 +18,6 @@ jobs:
     strategy:
       matrix:
         include:
-#          - python-version: 2.7
-#            os: ubuntu-20.04
 #          - python-version: 3.6
 #            os: ubuntu-20.04
           - python-version: 3.7
@@ -38,17 +36,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Set up Python ${{ matrix.python-version }} != 2.7
-      if: ${{ matrix.python-version != '2.7' }}
+    - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Set up Python 2.7
-      if: ${{ matrix.python-version == '2.7' }}
-      run: | 
-        sudo ln -sf /usr/bin/python2.7 /usr/bin/python
-        curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py
-        sudo python get-pip.py
 
     - name: Install dependencies
       run: |
@@ -93,8 +84,6 @@ jobs:
     strategy:
       matrix:
         include:
-#          - python-version: 2.7
-#            os: ubuntu-20.04
 #          - python-version: 3.6
 #            os: ubuntu-20.04
           - python-version: 3.7
@@ -112,17 +101,10 @@ jobs:
 
     if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
     steps:
-    - name: Set up Python ${{ matrix.python-version }} != 2.7
-      if: ${{ matrix.python-version != '2.7' }}
+    - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Set up Python 2.7
-      if: ${{ matrix.python-version == '2.7' }}
-      run: | 
-        sudo ln -sf /usr/bin/python2.7 /usr/bin/python
-        curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py
-        sudo python get-pip.py
 
     - name: Upgrade pip
       run: python -m pip install --upgrade pip
diff --git a/domainconnectzone/sigutil.py b/domainconnectzone/sigutil.py
index 82de559..27461b6 100644
--- a/domainconnectzone/sigutil.py
+++ b/domainconnectzone/sigutil.py
@@ -50,7 +50,7 @@ def get_publickey(domain):
         pembits = ''
 
         try:
-            records = dns.resolver.query(domain, 'TXT') # Get all text records
+            records = dns.resolver.resolve(domain, 'TXT') # Get all text records
             record_strings = []
             for record in records:
                 text = record.strings[0].decode('utf-8')
diff --git a/requirements-test.txt b/requirements-test.txt
index 3e2e187..96a50de 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,20 +1,14 @@
-cryptography>=3.3.2; python_version == '2.7'
-cryptography>=39.0.1; python_version > '2.7' and python_version < '3.6'
+cryptography>=39.0.1; python_version >= '3.0' and python_version < '3.6'
 cryptography>=40.0.2; python_version >= '3.6' and python_version < '3.7'
 cryptography>=42.0.3; python_version >= '3.7'
-dnspython>=1.16.0; python_version == '2.7'
-dnspython3>=1.15.0; python_version > '2.7'
+dnspython>=2.0.0; python_version >= '3.0'
 ipy>=1.1
-jsonschema>=3.2.0; python_version == '2.7'
-jsonschema>=4.0.0; python_version > '2.7'
+jsonschema>=4.0.0; python_version >= '3.0'
 requests>=2.27.1; python_version < '3.7'
 requests>=2.31.0; python_version >= '3.7'
 six>=1.16.0
-validators>=0.14.2; python_version == '2.7'
-validators>=0.20.0; python_version > '2.7'
+validators>=0.20.0; python_version >= '3.0'
 coverage>=5.5
-pytest>=4.6; python_version == '2.7'
-pytest>=7.0; python_version > '2.7'
+pytest>=7.0; python_version >= '3.0'
 mock>=3.0.5; python_version < '3.3'
-PyYAML>=5.1,<6.0; python_version == '2.7'
-PyYAML>=6.0; python_version > '2.7'
+PyYAML>=6.0; python_version >= '3.0'
diff --git a/requirements.txt b/requirements.txt
index c43a702..23b6709 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,10 @@
-cryptography>=3.3.2; python_version == '2.7'
-cryptography>=39.0.1; python_version > '2.7' and python_version < '3.6'
+cryptography>=39.0.1; python_version >= '3.0' and python_version < '3.6'
 cryptography>=40.0.2; python_version >= '3.6' and python_version < '3.7'
 cryptography>=42.0.3; python_version >= '3.7'
-dnspython>=1.16.0; python_version == '2.7'
-dnspython3>=1.15.0; python_version > '2.7'
+dnspython>=2.0.0; python_version >= '3.0'
 ipy>=1.1
-jsonschema>=3.2.0; python_version == '2.7'
-jsonschema>=4.0.0; python_version > '2.7'
+jsonschema>=4.0.0; python_version >= '3.0'
 requests>=2.27.1; python_version < '3.7'
 requests>=2.31.0; python_version >= '3.7'
 six>=1.16.0
-validators>=0.14.2; python_version == '2.7'
-validators>=0.20.0; python_version > '2.7'
\ No newline at end of file
+validators>=0.20.0; python_version >= '3.0'
\ No newline at end of file
diff --git a/setup.py b/setup.py
index d59391d..ebad1d7 100644
--- a/setup.py
+++ b/setup.py
@@ -64,22 +64,14 @@ def run(self):
     extras_require={
         'testing': [
             'coverage>=5.5',
-            'pytest>=4.6; python_version == "2.7"',
-            'pytest>=7.0; python_version > "2.7"',
+            'pytest>=7.0; python_version >= "3.0"',
             'mock>=3.0.5; python_version < "3.3"',
         ],
         'docs': [
             'phinx>=7.4.7',
             'sphinx-rtd-theme>=2.0.0'
         ],
-        ':python_version == "2.7"': [
-            'cryptography>=3.3.2',
-            'dnspython>=1.16.0',
-            'jsonschema>=3.2.0',
-            'requests>=2.27.1',
-            'validators>=0.14.2',
-        ],
-        ':python_version > "2.7" and python_version < "3.6"': [
+        ':python_version >= "3.0" and python_version < "3.6"': [
             'cryptography>=39.0.1',
             'dnspython3>=1.15.0',
             'jsonschema>=4.0.0',
@@ -102,7 +94,6 @@ def run(self):
         ],
     },
     classifiers=[
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
diff --git a/test/test_sigutil.py b/test/test_sigutil.py
index 20c500e..2ab0003 100644
--- a/test/test_sigutil.py
+++ b/test/test_sigutil.py
@@ -88,7 +88,7 @@ def test_exception_handling(self):
 
 class TestGetPublicKey(unittest.TestCase):
 
-    @patch('dns.resolver.query')
+    @patch('dns.resolver.resolve')
     def test_get_publickey(self, mock_query):
         # Mock DNS TXT records
         mock_records = MagicMock()
@@ -104,7 +104,7 @@ def test_get_publickey(self, mock_query):
         expected_key = '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqG9w0BAQEFAAOCAQ8AMIIBCgKCAQE\n-----END PUBLIC KEY-----\n'
         self.assertEqual(get_publickey(domain), expected_key)
 
-    @patch('dns.resolver.query')
+    @patch('dns.resolver.resolve')
     def test_get_publickey_full_spec(self, mock_query):
         # Mock DNS TXT records with fully specified algorithm and type
         mock_records = MagicMock()
@@ -122,7 +122,7 @@ def test_get_publickey_full_spec(self, mock_query):
         expected_key = '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqG9w0BAQEFAAOCAQ8AMIIBCgKCAQE\n-----END PUBLIC KEY-----\n'
         self.assertEqual(get_publickey(domain), expected_key)
 
-    @patch('dns.resolver.query')
+    @patch('dns.resolver.resolve')
     def test_get_publickey_with_invalid_data(self, mock_query):
         # Mock DNS TXT record with invalid data
         mock_records = MagicMock()
@@ -135,7 +135,7 @@ def test_get_publickey_with_invalid_data(self, mock_query):
         domain = 'example.com'
         self.assertIsNone(get_publickey(domain))
 
-    @patch('dns.resolver.query')
+    @patch('dns.resolver.resolve')
     def test_get_publickey_with_invalid_algorithm(self, mock_query):
         # Mock DNS TXT record with unsupported algorithm
         mock_records = MagicMock()
@@ -148,7 +148,7 @@ def test_get_publickey_with_invalid_algorithm(self, mock_query):
         domain = 'example.com'
         self.assertIsNone(get_publickey(domain))
 
-    @patch('dns.resolver.query')
+    @patch('dns.resolver.resolve')
     def test_get_publickey_with_invalid_type(self, mock_query):
         # Mock DNS TXT record with unsupported type
         mock_records = MagicMock()