diff --git a/.github/workflows/preflight_check.yaml b/.github/workflows/preflight_check.yaml
index f1643f9..5cf7b87 100644
--- a/.github/workflows/preflight_check.yaml
+++ b/.github/workflows/preflight_check.yaml
@@ -10,14 +10,14 @@ on:
 
 jobs:
   lint:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: ["3.8", "3.9", "3.10"]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
@@ -34,14 +34,14 @@ jobs:
     - name: Lint with flake8
       run: flake8 --exclude test,docs,examples .
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8]
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Setup Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Setup Environment
@@ -65,7 +65,7 @@ jobs:
   coveralls:
     name: Finish Coveralls
     needs: test
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     container: python:3-slim
     steps:
     - name: Finished
diff --git a/libnmap/objects/os.py b/libnmap/objects/os.py
index 30d3f3b..2d2e109 100644
--- a/libnmap/objects/os.py
+++ b/libnmap/objects/os.py
@@ -89,7 +89,6 @@ def __init__(self, osmatch_dict):
             pass
 
     def add_osclass(self, osclass_obj):
-
         """
         Add a NmapOSClass object to the OSMatch object. This method is
         useful to implement compatibility with older versions of NMAP
diff --git a/libnmap/process.py b/libnmap/process.py
index d53854f..a2825cc 100644
--- a/libnmap/process.py
+++ b/libnmap/process.py
@@ -20,7 +20,6 @@
 
 
 class NmapTask(object):
-
     """
     NmapTask is a internal class used by process. Each time nmap
     starts a new task during the scan, a new class will be instantiated.
@@ -46,7 +45,6 @@ def __init__(self, name, starttime=0, extrainfo=""):
 
 
 class NmapProcess(Thread):
-
     """
     NmapProcess is a class which wraps around the nmap executable.
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 56c9a07..d63813a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-black==24.3.0
+black==22.8.0
 defusedxml==0.6.0
 isort==5.6.4
 pre-commit
diff --git a/setup.py b/setup.py
index a2ca71f..eb5c0f5 100644
--- a/setup.py
+++ b/setup.py
@@ -1,11 +1,11 @@
 # -*- coding: utf-8 -*-
-from distutils.core import setup
 import sys
+from distutils.core import setup
 
-if sys.version_info >= (3,0):
+if sys.version_info >= (3, 0):
     with open("README.rst", encoding="utf-8") as rfile:
         long_description = rfile.read()
-else: # encoding not compatible with python2
+else:  # encoding not compatible with python2
     with open("README.rst") as rfile:
         long_description = rfile.read()