Did you restart your agent after the update of version ?
Does your .forestadmin-schema contain the same version of forest-express-sequelize as your package.json? The information should be at the end of your schema.
Because you are on Production, any change cannot be pushed directly.
You must do the upgrade on a development environment.
Once you have upgraded your agent version in development, you should commit the code changes (packages.json, source code, .forestadmin-schema.json etc.) to push it on production/Staging/Test. Pull the code in each server, install, build and restart server.
It should do the trick.