K3s traefik -> how to install plugins

Traefik Traefik v2
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Hi Everyone,

How does one install a Traefik plugin for a k3 cluster w/ a Traefik ingess controller? I've updated the /var/lib/rancher/k3s/server/manifests/traefik.yaml as follows:

    experimental:
      enabled: true
      plugins:
        enabled: true
        headerdump:
          moduleName: "github.com/jaybubs/headerdump"
          version: "v0.2.0"

I did a rolling restart of k3s cluster and the traefik deployment came back up. When I deployed a middleware w/ this plugin I got this error message:

plugin: unknown plugin type: headerdump

Any ideas?