rq-dashboard on Heroku

I'm trying to get rq-dashboard to work on my Redis server created through Heroku. I added it to my Flask app using

from flask import Flask
import rq_dashboard

app = Flask(__name__)
app.config.from_object(rq_dashboard.default_settings)
app.register_blueprint(rq_dashboard.blueprint, url_prefix="/rq")

But upon accessing the /rq URL I'm getting

Error 1 connecting to ec2-52-206-160-123.compute-1.amazonaws.com:19229. [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1091).

Any recommendations on what to do?