diff --git a/ansible/playbook.yml b/ansible/playbook.yml
index afc446c5..bf0ec0bd 100644
--- a/ansible/playbook.yml
+++ b/ansible/playbook.yml
@@ -15,7 +15,6 @@
           AWS_ACCESS_KEY_ID:                       AKIAT4NQES3ZKUKTDLIU
           AWS_DEFAULT_REGION:                      us-east-1
           AWS_SECRET_ACCESS_KEY:                   "{{ aws_secret_access_key }}"
-          CLOUDAMQP_APIKEY:                        "{{ cloudamqp_api_key }}"
           CLOUDAMQP_URL:                           "{{ cloudamqp_url }}"
           DATABASE_URL:                            "{{ database_url }}"
           DJANGO_ALLOWED_HOSTS:                    app.miqaweb.io
diff --git a/dev/README.md b/dev/README.md
index 55e83668..15cac818 100644
--- a/dev/README.md
+++ b/dev/README.md
@@ -103,3 +103,10 @@ Run:
 Then dump the contents into `vaultvars.yml` and run:
 
 `ansible-playbook --vault-password-file ./vault-password -i hosts playbook.yml`
+
+### Handling automated Heroku credential updates
+
+Whenever the CloudAMQP plugin or Postgres plugin changes its URL (which happens automatically),
+you'll need to update the worker accordingly. To do so, run the `update_creds.py` script in
+the `ansible` directory. Copy/paste the updated values into the `vaultvars.yml` file and
+commit the changes. Once the PR is merged, CD should automatically deploy the changes.