Upgrading from v0.18.1 to v0.19.0 is straightforward, and only requires updating your dittofeed image tag.

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Update Your docker-compose.lite.yaml File

Update the image tag in your docker-compose.lite.yaml file to v0.19.0: 
services:
  lite:
    image: dittofeed/dittofeed-lite:${IMAGE_TAG:-v0.19.0}

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Update Your Helm Chart

Update the tag in your values.yaml file to v0.19.0:
values.yaml
image:
  tag: ${IMAGE_TAG:-v0.19.0}
Upgrade the dittofeed chart: 
helm upgrade --install dittofeed ./dittofeed/helm-charts/dittofeed