Update README.md

README.md

@@ -112,7 +112,7 @@ To work with our elastic models and compilation tools, you\'ll need to install `
 
 ```shell
 pip install thestage
-pip install 'thestage-elastic-models[nvidia]'
+pip install 'thestage-elastic-models[nvidia]' --extra-index-url https://thestage.jfrog.io/artifactory/api/pypi/pypi-thestage-ai-production/simple
 pip install flash-attn==2.7.3 --no-build-isolation
 pip uninstall apex
 ```