diff --git a/.circleci/config.yml b/.circleci/config.yml
index eab99290..5e0f81cd 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -50,7 +50,8 @@ commands:
     description: Checkout code and install tox
     steps:
       - checkout
-      - run: pip install tox-factor
+      # Pin tox 3 because of https://github.com/rpkilby/tox-factor/issues/18
+      - run: pip install -U tox==3.27.1 tox-factor
 
 jobs:
   lint:
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 00000000..4585b2a6
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,11 @@
+on:
+  push:
+    branches: [main]
+  pull_request:
+name: ci
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: echo "hello world"