diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/github-ci.yaml
similarity index 51%
rename from .github/workflows/unit-tests.yaml
rename to .github/workflows/github-ci.yaml
index e18da4ae4..4f2bffd2e 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/github-ci.yaml
@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a variety of Python versions
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Unit Tests
+name: CI
 
 on:
   push:
@@ -11,47 +11,47 @@ on:
 
 jobs:
   tests:
+    name: pytest on ${{ matrix.python-version }}
     runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10"]
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v3
+    - name: Checkout Code
+      uses: actions/checkout@v3
+    - name: Setup Python
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
-
     - name: Upgrade pip
       run: |
         python -m pip install --upgrade pip
-
-    - name: Install requirements (python 3)
+    - name: Install requirements (Python 3)
       if: matrix.python-version != '2.7'
       run: |
         pip install -r requirements/ci.txt
-    - name: Install requirements (python 2)
+    - name: Install requirements (Python 2)
       if: matrix.python-version == '2.7'
       run: |
-        pip install pillow pytest pytest-cov
-
-    - name: Install module
+        pip install pillow pytest coverage
+    - name: Install PyPDF2
       run: |
         pip install .
-
     - name: Test with flake8
       run: |
         flake8 . --ignore=E203,W503,W504,E,F403,F405
       if: matrix.python-version != '2.7'
-
     - name: Test with pytest
       run: |
-        pytest Tests --cov --cov-report term-missing --cov-report xml -vv
-
-    - name: Upload Coverage to Codecov
-      uses: codecov/codecov-action@v2
+        python -m coverage run --parallel-mode -m pytest Tests -vv
+    - name: Upload coverage data
+      uses: actions/upload-artifact@v3
       with:
-        files: ./coverage.xml
+        name: coverage-data
+        path: .coverage.*
+        if-no-files-found: ignore
+
   package:
     name: Build & verify package
     runs-on: ubuntu-latest
@@ -67,4 +67,32 @@ jobs:
       - run: ls -l dist
       - run: check-wheel-contents dist/*.whl
       - name: Check long_description
-        run: python -m twine check dist/*
\ No newline at end of file
+        run: python -m twine check dist/*
+
+  coverage:
+    name: Combine & check coverage.
+    runs-on: ubuntu-latest
+    needs: tests
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v3
+        with:
+          # Use latest Python, so it understands all syntax.
+          python-version: ${{env.PYTHON_LATEST}}
+
+      - run: python -m pip install --upgrade coverage[toml]
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: coverage-data
+
+      - name: Combine coverage & create xml report
+        run: |
+          python -m coverage combine
+          python -m coverage xml
+      - name: Upload Coverage to Codecov
+        uses: codecov/codecov-action@v2
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage.xml
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 6de9eba5f..c47edb777 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,7 +8,7 @@ build
 dist/*
 
 # Code coverage artifacts
-.coverage
+.coverage*
 coverage.xml
 
 # Editors / IDEs
diff --git a/README.md b/README.md
index 5c790a497..884e9a4cf 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 [![Python Support](https://img.shields.io/pypi/pyversions/PyPDF2.svg)](https://pypi.org/project/PyPDF2/)
 [![](https://img.shields.io/badge/-documentation-green)](https://pypdf2.readthedocs.io/en/latest/)
 ![GitHub last commit](https://img.shields.io/github/last-commit/py-pdf/PyPDF2)
-[![codecov](https://codecov.io/gh/py-pdf/PyPDF2/branch/master/graph/badge.svg?token=id42cGNZ5Z)](https://codecov.io/gh/py-pdf/PyPDF2)
+[![codecov](https://codecov.io/gh/py-pdf/PyPDF2/branch/main/graph/badge.svg?token=id42cGNZ5Z)](https://codecov.io/gh/py-pdf/PyPDF2)
 
 # PyPDF2
 
diff --git a/requirements/ci.in b/requirements/ci.in
index 3545b25f2..a7592ecf5 100644
--- a/requirements/ci.in
+++ b/requirements/ci.in
@@ -1,6 +1,6 @@
-pytest
+coverage
 flake8
-flake8-bugbear
 flake8_implicit_str_concat
-pytest-cov
+flake8-bugbear
 pillow
+pytest
\ No newline at end of file
diff --git a/requirements/ci.txt b/requirements/ci.txt
index c926afe44..fcca42ffe 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -9,8 +9,8 @@ attrs==20.3.0
     #   flake8-bugbear
     #   flake8-implicit-str-concat
     #   pytest
-coverage[toml]==6.2
-    # via pytest-cov
+coverage==6.2
+    # via -r requirements/ci.in
 flake8==4.0.1
     # via
     #   -r requirements/ci.in
@@ -45,15 +45,9 @@ pyflakes==2.4.0
 pyparsing==3.0.7
     # via packaging
 pytest==7.0.1
-    # via
-    #   -r requirements/ci.in
-    #   pytest-cov
-pytest-cov==3.0.0
     # via -r requirements/ci.in
 tomli==1.2.3
-    # via
-    #   coverage
-    #   pytest
+    # via pytest
 typing-extensions==4.1.1
     # via importlib-metadata
 zipp==3.6.0
diff --git a/requirements/dev.in b/requirements/dev.in
index f01898fea..6a2b12f2b 100644
--- a/requirements/dev.in
+++ b/requirements/dev.in
@@ -1,4 +1,6 @@
 black
 pip-tools
 pre-commit
+pytest-cov
+twine
 wheel
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 71a5ee617..ff79c1b38 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -4,66 +4,145 @@
 #
 #    pip-compile requirements/dev.in
 #
+attrs==21.4.0
+    # via pytest
 black==22.3.0
     # via -r requirements/dev.in
+bleach==4.1.0
+    # via readme-renderer
+certifi==2021.10.8
+    # via requests
+cffi==1.15.0
+    # via cryptography
 cfgv==3.3.1
     # via pre-commit
+charset-normalizer==2.0.12
+    # via requests
 click==8.0.4
     # via
     #   black
     #   pip-tools
+colorama==0.4.4
+    # via twine
+coverage[toml]==6.2
+    # via pytest-cov
+cryptography==36.0.2
+    # via secretstorage
 dataclasses==0.8
     # via black
 distlib==0.3.4
     # via virtualenv
+docutils==0.18.1
+    # via readme-renderer
 filelock==3.4.1
     # via virtualenv
 identify==2.4.4
     # via pre-commit
+idna==3.3
+    # via requests
 importlib-metadata==4.8.3
     # via
     #   click
+    #   keyring
     #   pep517
+    #   pluggy
     #   pre-commit
+    #   pytest
+    #   twine
     #   virtualenv
 importlib-resources==5.2.3
     # via
     #   pre-commit
+    #   tqdm
     #   virtualenv
+iniconfig==1.1.1
+    # via pytest
+jeepney==0.7.1
+    # via
+    #   keyring
+    #   secretstorage
+keyring==23.4.1
+    # via twine
 mypy-extensions==0.4.3
     # via black
 nodeenv==1.6.0
     # via pre-commit
+packaging==21.3
+    # via
+    #   bleach
+    #   pytest
 pathspec==0.9.0
     # via black
 pep517==0.12.0
     # via pip-tools
 pip-tools==6.4.0
     # via -r requirements/dev.in
+pkginfo==1.8.2
+    # via twine
 platformdirs==2.4.0
     # via
     #   black
     #   virtualenv
+pluggy==1.0.0
+    # via pytest
 pre-commit==2.17.0
     # via -r requirements/dev.in
+py==1.11.0
+    # via pytest
+pycparser==2.21
+    # via cffi
+pygments==2.11.2
+    # via readme-renderer
+pyparsing==3.0.8
+    # via packaging
+pytest==7.0.1
+    # via pytest-cov
+pytest-cov==3.0.0
+    # via -r requirements/dev.in
 pyyaml==6.0
     # via pre-commit
+readme-renderer==34.0
+    # via twine
+requests==2.27.1
+    # via
+    #   requests-toolbelt
+    #   twine
+requests-toolbelt==0.9.1
+    # via twine
+rfc3986==1.5.0
+    # via twine
+secretstorage==3.3.1
+    # via keyring
 six==1.16.0
-    # via virtualenv
+    # via
+    #   bleach
+    #   virtualenv
 toml==0.10.2
     # via pre-commit
 tomli==1.2.3
     # via
     #   black
+    #   coverage
     #   pep517
+    #   pytest
+tqdm==4.64.0
+    # via twine
+twine==3.8.0
+    # via -r requirements/dev.in
 typed-ast==1.5.2
     # via black
 typing-extensions==4.1.1
     # via
     #   black
     #   importlib-metadata
+urllib3==1.26.9
+    # via
+    #   requests
+    #   twine
 virtualenv==20.14.0
     # via pre-commit
+webencodings==0.5.1
+    # via bleach
 wheel==0.37.1
     # via
     #   -r requirements/dev.in