diff --git a/.forgejo/workflows/renovate.yml b/.forgejo/workflows/renovate.yml
new file mode 100644
index 0000000..0ebc40a
--- /dev/null
+++ b/.forgejo/workflows/renovate.yml
@@ -0,0 +1,33 @@
+name: Renovate
+
+on:
+  schedule:
+    - cron: '0 6 * * *'
+  workflow_dispatch:
+
+jobs:
+  renovate:
+    name: Renovate
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Dagger Remote Engine (via stunnel)
+        env:
+          DAGGER_STUNNEL_URL: ${{ secrets.DAGGER_STUNNEL_URL }}
+          DAGGER_CA_CERT: ${{ secrets.DAGGER_CA_CERT }}
+          DAGGER_CLIENT_CERT: ${{ secrets.DAGGER_CLIENT_CERT }}
+          DAGGER_CLIENT_KEY: ${{ secrets.DAGGER_CLIENT_KEY }}
+        run: scripts/setup_dagger_remote.sh
+
+      - name: Run Renovate
+        env:
+          DAGGER_NO_NAG: "1"
+          RENOVATE_FORGEJO_TOKEN: ${{ secrets.RENOVATE_FORGEJO_TOKEN }}
+        run: task renovate
+
+      - name: Cleanup TLS credentials
+        if: always()
+        run: rm -rf /tmp/dagger-tls /tmp/stunnel-dagger.conf /tmp/stunnel.pid
diff --git a/Taskfile.yml b/Taskfile.yml
index da72518..481dfd3 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -336,6 +336,14 @@ tasks:
       - |
         dagger query '{ engine { localCache { prune(maxUsedSpace: "75gb", targetSpace: "50gb") } } }'
 
+  renovate:
+    desc: Run Renovate bot against the repository via Dagger
+    preconditions:
+      - sh: test -n "$RENOVATE_FORGEJO_TOKEN"
+        msg: "RENOVATE_FORGEJO_TOKEN is not set"
+    cmds:
+      - dagger call --progress=plain -q -m ci --source=. renovate --renovate-token env:RENOVATE_FORGEJO_TOKEN
+
   integration-android:
     desc: UI integration tests on a connected Android emulator (Stalwart on host, emulator reaches it via 10.0.2.2)
     deps: [_preflight, _android-sdk-check, _android-avd-setup]
diff --git a/ci/main.go b/ci/main.go
index 44cd536..294b069 100644
--- a/ci/main.go
+++ b/ci/main.go
@@ -842,6 +842,18 @@ func (m *Ci) PublishAndroid(
 	return m.UploadToPlayStore(ctx, signed, playStoreConfig)
 }
 
+// Renovate runs Renovate bot against the repository on Forgejo/Codeberg.
+func (m *Ci) Renovate(ctx context.Context, renovateToken *dagger.Secret) (string, error) {
+	return dag.Container().
+		From("renovate/renovate:39").
+		WithSecretVariable("RENOVATE_TOKEN", renovateToken).
+		WithEnvVariable("RENOVATE_PLATFORM", "forgejo").
+		WithEnvVariable("RENOVATE_ENDPOINT", "https://codeberg.org").
+		WithEnvVariable("RENOVATE_REPOSITORIES", "guettli/sharedinbox").
+		WithExec([]string{"renovate"}).
+		Stdout(ctx)
+}
+
 // Graph returns a Mermaid diagram of the CI pipeline structure.
 // Paste the output into any Mermaid renderer (codeberg, github, mermaid.live)
 // or save it as a .md file to get a rendered diagram.
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..52914a2
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,10 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "labels": ["dependencies"],
+  "github-actions": {
+    "fileMatch": ["^\\.forgejo/workflows/[^/]+\\.ya?ml$"]
+  }
+}