diff --git a/.github/workflows/flake8.yml b/.github/workflows/flake8.yml
index 819104d..a934906 100644
--- a/.github/workflows/flake8.yml
+++ b/.github/workflows/flake8.yml
@@ -8,9 +8,9 @@ jobs:
         name: Lint
         steps:
             - name: Check out source repository
-              uses: actions/checkout@v2
+              uses: actions/checkout@v4
             - name: Set up Python environment
-              uses: actions/setup-python@v2
+              uses: actions/setup-python@v5
               with:
                   python-version: "3.9"
             - name: flake8 Lint
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d98c199..ddda541 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,6 +1,10 @@
 name: Tests and Codecov
 on:
   push:
+    branches:
+      - master
+      - main
+      - "release/*"
   pull_request:
   workflow_dispatch:
 
@@ -10,14 +14,14 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', 'pypy-3.9-7.3.12']
+                python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', 'pypy-3.9-7.3.13']
 
         steps:
             - name: Checkout repository
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
 
             - name: Set up Python ${{ matrix.python-version }}
-              uses: actions/setup-python@v4
+              uses: actions/setup-python@v5
               with:
                   python-version: ${{ matrix.python-version }}
 
@@ -34,7 +38,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout repository
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
 
             - name: Install dependencies
               run: |
@@ -49,7 +53,7 @@ jobs:
               run: poetry run coverage xml
 
             - name: Upload coverage to Codecov
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v5
               with:
                   files: coverage.xml
                   fail_ci_if_error: true
diff --git a/pyproject.toml b/pyproject.toml
index 5944f4b..d0772f4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,11 +1,16 @@
-[tool.poetry]
+[project]
 name = "pipreqs"
 version = "0.5.0"
 description = "Pip requirements.txt generator based on imports in project"
-authors = ["Vadim Kravcenko <vadim.kravcenko@gmail.com>"]
+authors = [
+    { name = "Vadim Kravcenko", email = "vadim.kravcenko@gmail.com" }
+]
+maintainers = [
+    {name = "Jonas Eschle", email = "jonas.eschle@gmail.com"}
+]
 license = "Apache-2.0"
-readme = ["README.rst", "HISTORY.rst"]
-packages = [{include = "pipreqs"}]
+readme = "README.rst"
+packages = [{ include = "pipreqs" }]
 repository = "https://github.com/bndr/pipreqs"
 keywords = ["pip", "requirements", "imports"]
 classifiers = [
@@ -14,29 +19,31 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Natural Language :: English",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
-    "Programming Language :: Python :: 3.12"
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
+requires-python = ">=3.9, <3.14"
+dependencies = [
+    "yarg>=0.1.9",
+    "docopt>=0.6.2",
+    "nbconvert>=7.11.0",
+    "ipython>=8.12.3",
+]
+[project.optional-dependencies]
+dev = [
+    "flake8>=6.1.0",
+    "tox>=4.11.3",
+    "coverage>=7.3.2",
+    "sphinx>=7.2.6;python_version>='3.9'",
+]
+
 
 [tool.poetry.scripts]
 pipreqs = "pipreqs.pipreqs:main"
 
-[tool.poetry.dependencies]
-python = ">=3.8.1,<3.13"
-yarg = "0.1.9"
-docopt = "0.6.2"
-nbconvert = "^7.11.0"
-ipython = "8.12.3"
-
-[tool.poetry.group.dev.dependencies]
-flake8 = "^6.1.0"
-tox = "^4.11.3"
-coverage = "^7.3.2"
-sphinx = { version = "^7.2.6", python = ">=3.9" }
-
 [build-system]
-requires = ["poetry-core"]
+requires = ["poetry-core>=2.0.0,<3.0.0"]
 build-backend = "poetry.core.masonry.api"
diff --git a/tox.ini b/tox.ini
index 13f090e..6b4c648 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,20 +1,20 @@
 [tox]
 isolated_build = true
-envlist = py38, py39, py310, py311, py312, pypy3, flake8
+envlist = py39, py310, py311, py312, py313, pypy3, flake8
 
 [gh-actions]
 python =
-    3.8: py38
     3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
-    pypy-3.9-7.3.12: pypy3
+    3.13: py313
+    pypy-3.9-7.3.13: pypy3
 
 [testenv]
 setenv =
     PYTHONPATH = {toxinidir}:{toxinidir}/pipreqs
-commands = 
+commands =
     python -m unittest discover
 
 [testenv:flake8]
@@ -28,4 +28,4 @@ exclude =
     tests/_data_duplicated_deps/
     tests/_data_ignore/
     tests/_invalid_data/
-max-line-length = 120
\ No newline at end of file
+max-line-length = 120