diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..303e492
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,17 @@
+name: build
+on: [pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
+    - name: Install dependencies
+      run: pip install -r requirements.txt
+    - name: Run syntax check
+      run: python check.py
+    - name: Build site
+      run: python build.py
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 246a732..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-language: python
-python:
-  # Current production server runs Debian stretch, which has Python 3.5.
-  - '3.5'
-install:
-  - pip install -r requirements.txt
-script:
-  - python check.py && python build.py