diff --git a/.coveragerc b/.coveragerc
index 188cbaf..d908e8e 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,6 +2,7 @@
 source =
     result
 omit =
+    setup.py
     result/typetests.py
 
 [report]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..87e30a8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,58 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+name: CI
+
+jobs:
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python:
+          - '3.5'
+          - '3.6'
+          - '3.7'
+          - '3.8'
+    name: Python ${{ matrix.python }}
+    steps:
+      # Python
+      - name: Setup python ${{ matrix.python }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python }}
+
+      # Check out code
+      - uses: actions/checkout@v2
+
+      # Cached dependencies
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-py${{ matrix.python }}-${{ hashFiles('**/requirements-dev.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-py${{ matrix.python }}-
+      - name: Install dev dependencies
+        run: pip install -r requirements-dev.txt
+
+      # Install library
+      - name: Install result
+        run: pip install -e .
+
+      # Tests
+      - name: Run tests
+        run: pytest --cov-report term --cov-report xml:coverage.xml
+      - name: Run mypy on result.py
+        run: mypy result/result.py
+      - name: Run typetests
+        run: mypy result/typetests.py
+
+      # Coverage
+      - name: Upload coverage to codecov.io
+        uses: codecov/codecov-action@v1
+        if: matrix.python == '3.8'
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 88728f9..5a03d25 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .cache/
 .coverage
+coverage.xml
 *.swp
 *.pyc
 __pycache__
@@ -8,3 +9,4 @@ dist/
 build/
 .idea/
 .mypy_cache/
+venv/
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index d80972c..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-language: python
-dist: xenial
-python:
-  - 3.4
-  - 3.5
-  - 3.6
-  - 3.7
-install:
-  - pip install -r requirements-dev.txt
-  - pip install coveralls
-script:
-  - pip install -e .
-  - py.test
-  - if [ $(python -c 'import sys; print(sys.version_info.minor)') -gt 4 ]; then
-      mypy result/result.py;
-      mypy result/typetests.py;
-      echo "Mypy tests done";
-    else
-      echo "Skipping mypy";
-    fi
-after_success:
-  - coveralls
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91bc97d..eae0e45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,7 +13,8 @@ Possible log types:
 
 ## Unreleased
 
-...
+- [deprecated] Python 3.4 support is deprecated and will be removed in the next
+  release
 
 ## [0.5.0] - 2020-03-03
 
diff --git a/README.rst b/README.rst
index 03181fb..62c5a16 100644
--- a/README.rst
+++ b/README.rst
@@ -1,13 +1,13 @@
 Result
 ======
 
-.. image:: https://img.shields.io/travis/dbrgn/result/master.svg
-    :alt: Build status
-    :target: https://travis-ci.org/dbrgn/result
+.. image:: https://img.shields.io/github/workflow/status/dbrgn/result/CI/master
+    :alt: GitHub Workflow Status (branch)
+    :target: https://github.com/dbrgn/result/actions?query=workflow%3ACI+branch%3Amaster
 
-.. image:: https://img.shields.io/coveralls/dbrgn/result/master.svg
+.. image:: https://codecov.io/gh/dbrgn/result/branch/master/graph/badge.svg
     :alt: Coverage
-    :target: https://coveralls.io/github/dbrgn/result
+    :target: https://codecov.io/gh/dbrgn/result
 
 A simple Result type for Python 3 `inspired by Rust
 <https://doc.rust-lang.org/std/result/>`__, fully type annotated.
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 0000000..a5623e4
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,13 @@
+coverage:
+  precision: 2
+  round: nearest
+  range: "80...100"
+  status:
+    project:
+      default:
+        target: 85%
+        threshold: 3%
+comment:
+  layout: "diff, flags, files"
+  behavior: default
+  require_changes: yes
diff --git a/pytest.ini b/pytest.ini
deleted file mode 100644
index 4a7b375..0000000
--- a/pytest.ini
+++ /dev/null
@@ -1,12 +0,0 @@
-[pytest]
-addopts = --pep8 --tb=short --cov
-python_files = tests.py
-norecursedirs = *.egg tmp* build .tox
-pep8ignore =
-    *.py E126 E127 E128
-    setup.py ALL
-    */tests/* ALL
-    */docs/* ALL
-    */build/* ALL
-    */TOXENV/* ALL
-pep8maxlinelength = 99
diff --git a/requirements-dev.txt b/requirements-dev.txt
index f023f7b..4773fab 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-pytest==2.8.5
-pytest-cov==2.2.0
-pytest-pep8==1.0.6
+pytest>=5,<6
+pytest-cov>=2.8,<3
+pytest-flake8>=1,<2
 mypy==0.720
diff --git a/setup.cfg b/setup.cfg
index 0c9e0fc..9fef5ce 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,16 @@
 [metadata]
 license_file = LICENSE
+
+[tool:pytest]
+addopts = --flake8 --tb=short --cov=.
+python_files = tests.py
+norecursedirs = *.egg tmp* build .tox
+flake8-ignore =
+    *.py E126 E127 E128 W504 F811  # Note: Remove F811 after the next flake8 upgrade
+    setup.py ALL
+    */tests/* ALL
+    */docs/* ALL
+    */build/* ALL
+    */venv/* ALL
+    */TOXENV/* ALL
+flake8-max-line-length = 99
diff --git a/setup.py b/setup.py
index 12d190f..624b964 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,6 @@
           'Development Status :: 4 - Beta',
           'License :: OSI Approved :: MIT License',
           'Programming Language :: Python :: 3',
-          'Programming Language :: Python :: 3.4',
           'Programming Language :: Python :: 3.5',
           'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: 3.7',