diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
new file mode 100644
index 0000000..2d60fcb
--- /dev/null
+++ b/.github/workflows/update.yml
@@ -0,0 +1,36 @@
+name: Build site
+on:
+  repository_dispatch:
+  push:
+    branches:
+      - master
+
+jobs:
+  deploy:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: 'latest'
+          extended: true
+      - name: Install dependencies
+        run:
+          - sudo apt install emacs-nox python3 python3-pip
+          - pip3 install -r ./scripts/requirements.txt
+      - name: Run scripts
+        run:
+          - bash ./scripts/dot-stats-get-lengths.sh
+          - python3 ./scripts/dot-stats-plot-history.py
+          - python3 ./scripts/dot-stats-plot-lengths.py
+      - name: Build
+        run: hugo
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: github.ref == 'refs/heads/master'
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./public
diff --git a/scripts/requirements.txt b/scripts/requirements.txt
new file mode 100644
index 0000000..88f28f9
--- /dev/null
+++ b/scripts/requirements.txt
@@ -0,0 +1,3 @@
+matplotlib
+pandas
+numpy