Tor Browser 4.5 includes Tor 0.2.6.7 with extra patches, updates the NoScript add-on to version 2.6.9.22, updates the HTTPS-Everywhere extension to version 5.0.3, and updates meek to version 0.17. In addition, the new Tor Browser 4.5 includes obfs4proxy 0.0.5 to allow users to use obfs4proxy for obfs4, obfs3, obfs2, and ScrambleSuit bridges, and updates the Pluggable Transport Dependency.