diff --git a/POLICIES.md b/POLICIES.md
index 8075d3a..a1b2e86 100644
--- a/POLICIES.md
+++ b/POLICIES.md
@@ -10,6 +10,7 @@ All agents in this org must follow these policies.
 
 - **Container images**: Push to `ghcr.io` only. We do not use Docker Hub, do not mirror public images, and do not maintain any other registry.
 - **Dependency updates**: Managed by **Mend Renovate**. We do not use Dependabot — never enable it, never create `.github/dependabot.yml`, never reference it in workflows or docs.
+- **Package mirrors**: Do not set up, configure, or reference package mirrors or proxies of any kind (npm, pip, Maven, container, etc.). Always use upstream registries directly.
 - **Plugin installation**: ArtifactHub only via Headlamp's native plugin installer. No Helm-based plugin installation, no custom install scripts.
 
 ## Versioning