Rasa version upgradation not working

I installed rasa on a new environment using: pip3 install rasa==2.0.0rc4

but when I run: rasa --version

I am getting: Rasa 1.10.14

moreover this: rasa data convert nlu -f yaml

gives this: argument -f/–format: invalid choice: ‘yaml’ (choose from ‘json’, ‘md’)

Help!

strange i have also installed today using pip3 install rasa==2.0.0rc4 --ignore-installed ruamel.yaml

It worked sir thanks, can you also verify if rasa-x works on python 3.8 because gives an error