Streamlit theme on my app not working on heroku after deployment

I’ve made a basic ML Streamlit App and deployed it on Heroku. But the theme I’ve selected mentioned in the .streamlit/config.toml file is not visible on the Heroku app after deployment. It shows the default theme.

Is there any reason why it’s showing the default theme and not mine??
Also, please help me in solving this query.

Here is the GitHub repo and Heroku app details -

Hi @techierushi, welcome to the Streamlit community!

I would specify the version of Streamlit you need directly in requirements.txt, to ensure there isn’t caching of an older version of Streamlit or something strange like that.