diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
new file mode 100644
index 0000000..2fb4f26
--- /dev/null
+++ b/.github/workflows/update.yml
@@ -0,0 +1,78 @@
+name: Update Elastic release
+
+on:
+  schedule:
+    - cron: '0 0 * * 0'  # At 00:00 every Sunday
+
+jobs:
+
+  check-and-update:
+    name: Check and update Elastic release
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+      - run: npm install semver
+
+      - name: Get latest release version
+        uses: actions/github-script@v5
+        id: get-latest-release
+        with:
+          script: |
+            const semver = require('semver')
+
+            const latestVersion = await github.
+              paginate(github.rest.repos.listReleases, {
+                owner: 'elastic',
+                repo: 'elasticsearch'
+              })
+              .then(releases => {
+                for (const release of releases) {
+                  // Results are returned sorted by created_at, so it is safe to assume
+                  // that the first encountered match is also the series' latest release.
+
+                  const version=semver.clean(release.tag_name)
+
+                  if (semver.satisfies(version, '7.x')) {
+                    return version
+                  }
+                }
+              });
+
+            if (latestVersion) {
+              // Return an object so that the result can be handled as structured data
+              // instead of a quoted string in subsequent steps.
+              return { version: latestVersion }
+            }
+
+      - name: Update stack version
+        id: update-files
+        if: steps.get-latest-release.outputs.result
+        run: |
+          source .env
+          cur_ver="$ELK_VERSION"
+          new_ver=${{ fromJson(steps.get-latest-release.outputs.result).version }}
+
+          # Escape dot characters so sed interprets them as literal dots
+          cur_ver="$(echo $cur_ver | sed 's/\./\\./g')"
+
+          for f in .env docker-stack.yml README.md; do
+              sed -i "s/${cur_ver}/${new_ver}/g" "$f"
+          done
+
+          git_status="$(git status --porcelain)"
+          if [[ ${git_status} ]]; then
+              echo -e 'Changes to be committed:\n'
+              echo "${git_status}"
+              echo '::set-output name=has_changes::true'
+          fi
+
+      - name: Send pull request to update to new version
+        if: steps.update-files.outputs.has_changes
+        uses: peter-evans/create-pull-request@v3
+        with:
+          commit-message: Update to v${{ fromJson(steps.get-latest-release.outputs.result).version }}
+          title: Update to v${{ fromJson(steps.get-latest-release.outputs.result).version }}
+          delete-branch: true
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..753765e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+# Node.js artifacts created by certain GitHub Actions
+/node_modules/
+/package-lock.json