Connecting to remote repository [https://raw.github.com/forge/plugin-repository/master/repository.yaml]... ***ERROR*** [forge install-plugin] peer not authenticated

Whenever I'm trying to list or install a plugin, I'm getting an peer not authenticated:

JBoss Forge, version [ 1.0.5.Final ] - JBoss, by Red Hat, Inc. [ http://jboss.org/forge ]
[example] example $ forge list-plugins
Wrote /Users/sfrank/.forge/plugins
[example] example $ forge install-plugin jboss-as-7
Connecting to remote repository https://raw.github.com/forge/plugin-repository/master/repository.yaml... **ERROR** [forge install-plugin] peer not authenticated