google/api/annotations.proto: File not found.

[bradparks]

When I try and use polyglot, I get a missing import

google/api/annotations.proto: File not found.

Full error

WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
google/api/annotations.proto: File not found.
target/protoc-dependencies/c8d906d66905cf92bbd1cfbc0960871a/google/api/monitoring.proto: Import "google/api/annotations.proto" was not found or had errors.

This is my request

java -jar ~/Downloads/polyglot.jar \
    --proto_discovery_root=/Users/bparks/myprotos/ \
    list_services