diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..a58c570
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,51 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - dev
+  pull_request:
+
+jobs:
+  test:
+    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
+    runs-on: ${{ matrix.os }}
+    if: "!contains(github.event.head_commit.message, 'skip ci')"
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.5'
+          # - 'nightly'
+        os:
+          - ubuntu-latest
+          - macOS-latest
+          - windows-latest
+        arch:
+          - x64
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+          arch: ${{ matrix.arch }}
+      - uses: actions/cache@v1
+        env:
+          cache-name: cache-artifacts
+        with:
+          path: ~/.julia/artifacts
+          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-test-${{ env.cache-name }}-
+            ${{ runner.os }}-test-
+            ${{ runner.os }}-
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v1
+        with:
+          file: lcov.info
+      - uses: julia-actions/julia-uploadcoveralls@v1
+        env:
+          COVERALLS_TOKEN: ${{ secrets.COVERALLS_TOKEN }}
diff --git a/README.md b/README.md
index 88d9f8d..583c29d 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 # Postprocessing
 
-[![Build Status](https://travis-ci.com/ranocha/Postprocessing.jl.svg?branch=master)](https://travis-ci.com/ranocha/Postprocessing.jl)
-[![Build Status](https://ci.appveyor.com/api/projects/status/github/ranocha/Postprocessing.jl?svg=true)](https://ci.appveyor.com/project/ranocha/Postprocessing-jl)
+[![Build Status](https://github.com/ranocha/Postprocessing.jl/workflows/CI/badge.svg)](https://github.com/ranocha/Postprocessing.jl/actions)
 [![Codecov](https://codecov.io/gh/ranocha/Postprocessing.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/ranocha/Postprocessing.jl)
 [![Coveralls](https://coveralls.io/repos/github/ranocha/Postprocessing.jl/badge.svg?branch=master)](https://coveralls.io/github/ranocha/Postprocessing.jl?branch=master)
 
diff --git a/.appveyor.yml b/appveyor.yml
similarity index 95%
rename from .appveyor.yml
rename to appveyor.yml
index 88342a3..762a717 100644
--- a/.appveyor.yml
+++ b/appveyor.yml
@@ -1,26 +1,34 @@
 # Documentation: https://github.com/JuliaCI/Appveyor.jl
+
 environment:
   matrix:
-  - julia_version: 1.4
+  - julia_version: 1
+
 platform:
   - x64
+
 branches:
   only:
     - master
     - /release-.*/
+
 notifications:
   - provider: Email
     on_build_success: false
     on_build_failure: false
     on_build_status_changed: false
+
 install:
   - ps: iex ((new-object net.webclient).DownloadString("https://raw.githubusercontent.com/JuliaCI/Appveyor.jl/version-1/bin/install.ps1"))
+
 build_script:
   - echo "%JL_BUILD_SCRIPT%"
   - C:\julia\bin\julia -e "%JL_BUILD_SCRIPT%"
+
 test_script:
   - echo "%JL_TEST_SCRIPT%"
   - C:\julia\bin\julia -e "%JL_TEST_SCRIPT%"
+
 on_success:
   - echo "%JL_CODECOV_SCRIPT%"
   - C:\julia\bin\julia -e "%JL_CODECOV_SCRIPT%"
diff --git a/.travis.yml b/outdated/.travis.yml
similarity index 100%
rename from .travis.yml
rename to outdated/.travis.yml