Invalid characters in existing Variant Name in Apollo Studio

I am trying to update/publish a new schema version to an existing variant in Apollo Studio. I have a variant per environment (i.e. dev, stage, prod) and prefix our variant names the string env:. For example env:dev, env:stage, env:prod.

While this used to work, it seems the server is now validating variant names match this REGEX: [a-zA-Z0-9][\/\.a-zA-Z0-9_-]{0,63}$ (note it does not match due to the colon in our variant name). When we try to publish a new schema to an existing variant we see this error:

Error: Graph variant (a.k.a. tag) 'env:dev' is invalid; all graph variants must follow pattern '^[a-zA-Z0-9][\/\.a-zA-Z0-9_-]{0,63}$'

This error occurs when we try to publish to studio via the apollo or rover tooling.