SQL Server Log full (replication)

Hello,

I am seeing my transaction log sitting at 120GB with only 5GB free space. I am taking taking transaction log backups once every 5 mins for that database. This is the subsriber database. The log file for publisher database is sitting at 5GB with 4 GB freesace. When I run select name,log_reuse_wait_desc from sys.databases I get dbname,replication for the subscriber database. How do I shrink my log file.

Thanks