diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 75e7067..53d31a6 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -16,14 +16,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.12"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - run: pip install pytest pytest-cov -r requirements.txt
+      - run: pip install pytest==8.1.2 pytest-cov -r requirements.txt
       - run: pytest --cov=webssh
       - run: mkdir -p coverage
       - uses: tj-actions/coverage-badge-py@v2
diff --git a/requirements.txt b/requirements.txt
index 18ee6b3..95419b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-paramiko==3.0.0
-tornado==6.2.0
+paramiko==3.5.1
+tornado==6.5.1
diff --git a/tests/test_handler.py b/tests/test_handler.py
index a9ad924..5eabfa5 100644
--- a/tests/test_handler.py
+++ b/tests/test_handler.py
@@ -121,7 +121,7 @@ class TestMixinHandler(unittest.TestCase):
         self.assertEqual(mhandler.get_real_client_addr(),
                          (x_forwarded_for, fake_port))
 
-        mhandler.request.headers.add('X-Forwarded-Port', fake_port + 1)
+        mhandler.request.headers.add('X-Forwarded-Port', str(fake_port + 1))
         self.assertEqual(mhandler.get_real_client_addr(),
                          (x_forwarded_for, fake_port))
 
@@ -135,7 +135,7 @@ class TestMixinHandler(unittest.TestCase):
         self.assertEqual(mhandler.get_real_client_addr(),
                          (x_real_ip, fake_port))
 
-        mhandler.request.headers.add('X-Real-Port', fake_port + 1)
+        mhandler.request.headers.add('X-Real-Port', str(fake_port + 1))
         self.assertEqual(mhandler.get_real_client_addr(),
                          (x_real_ip, fake_port))
 
@@ -336,5 +336,5 @@ class TestIndexHandler(unittest.TestCase):
         ssh.exec_command.return_value = (stdin, stdout, stderr)
 
         encoding = IndexHandler.get_default_encoding(handler, ssh)
-        self.assertEquals("utf-8", encoding)
+        self.assertEqual("utf-8", encoding)