diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index b515088e..00000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-
-version: 2
-jobs:
-  build:
-    docker:
-      - image: circleci/python:3.6.1
-
-    working_directory: ~/repo
-
-    steps:
-      - checkout
-      - run:
-          name: Level synthesis test
-          command: |
-            echo -e "y\n" | python3 ./make_level.py testlevel1 "Test Level 1" testskill "Test Skill"
-            echo -e "y\n" | python3 ./make_level.py testlevel2 "Test Level 2" testskill
-      - run:
-          name: Set up environment
-          command: |
-            pip3 install --user .
-            pip3 install --user pytest
-            pip3 install --user flake8
-            git config --global user.name "CircleCI"
-            git config --global user.email "circleci@example.com"
-      - run:
-          name: Running tests
-          command: |
-            export PATH=$PATH:$HOME/.local/bin
-            python3 -m pytest gitgud
-      - run:
-          name: flake8 checks
-          command: |
-            python3 -m flake8 .
diff --git a/.github/workflows/functional-tests.yml b/.github/workflows/functional-tests.yml
new file mode 100644
index 00000000..290fd811
--- /dev/null
+++ b/.github/workflows/functional-tests.yml
@@ -0,0 +1,45 @@
+name: Run OS tests
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.platform }}
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [ubuntu-latest, macos-latest, windows-latest]
+    defaults:
+      run:
+        shell: bash
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+
+    - uses: actions/setup-python@v2
+      with:
+        python-version: '3.6.7'
+
+    - name: Set up environment
+      run: |
+        pip install pytest
+        git config --global user.name "Github Actions"
+        git config --global user.email "action@github.com"
+
+    - name: Synthesize level
+      run: |
+        echo -e "y\n" | python ./make_level.py testlevel1 "Test Level 1" testskill "Test Skill"
+        echo -e "y\n" | python ./make_level.py testlevel2 "Test Level 2" testskill
+
+    - name: Install Git Gud
+      run: |
+        pip install .
+
+    - name: Run tests
+      run: python -m pytest gitgud
diff --git a/.github/workflows/style.yml b/.github/workflows/style.yml
new file mode 100644
index 00000000..652b8307
--- /dev/null
+++ b/.github/workflows/style.yml
@@ -0,0 +1,27 @@
+name: Check PEP8
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+
+    - uses: actions/setup-python@v2
+      with:
+        python-version: '3.6.7'
+
+    - name: Set up environment
+      run: |
+        pip install flake8
+
+    - name: Check flake8
+      run: python -m flake8 .
diff --git a/setup.py b/setup.py
index 36fc0207..25ab7df2 100644
--- a/setup.py
+++ b/setup.py
@@ -38,7 +38,7 @@
     },
     python_requires='>=3.6',
     install_requires=[
-        'gitpython',
+        'gitpython==3.1.7',
         'importlib_resources',
         'pyyaml',
     ],