Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Jeffrey S. Racine <racinej@mcmaster.ca>’
  
  Found the following (possibly) invalid URLs:
    URL: https://www.nserc-crsng.gc.ca
      From: DESCRIPTION
            man/crs-package.Rd
      Status: Error
      Message: SSL peer certificate or SSH remote key was not OK [www.nserc-crsng.gc.ca]:
        SSL certificate verification failed: certificate signer not trusted. (CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none)
    URL: https://www.sshrc-crsh.gc.ca
      From: DESCRIPTION
            man/crs-package.Rd
      Status: Error
      Message: SSL peer certificate or SSH remote key was not OK [www.sshrc-crsh.gc.ca]:
        SSL certificate verification failed: certificate signer not trusted. (CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none)

No changes to worse in reverse depends.