diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b07c889..2520398 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -172,3 +172,10 @@ jobs:
           cache-to: type=inline
           push: true
         if: ${{ github.repository_owner == 'OCA' && github.ref == 'refs/heads/master' }}
+  workflow-keepalive:
+    if: github.event_name == 'schedule'
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+    steps:
+      - uses: liskin/gh-workflow-keepalive@v1
diff --git a/README.md b/README.md
index 7a58adb..3d7c657 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,9 @@ CI on these images, be aware that, while we will not break things without
 reason, we will prioritize ease of maintenance for OCA over backward
 compatibility. ⚠️
 
-These images provide the following guarantees:
+They are rebuilt every day at 04:00 UTC, to always include latest odoo changes.
+
+They provide the following guarantees:
 
 - Odoo runtime dependencies are installed (`wkhtmltopdf`, `lessc`, etc).
 - Odoo source code is in `/opt/odoo`.