My cloth is fraying badly 😣

Please help! I’m so close to finishing this rug but every time I tuft, it pulls more, so it isn’t tight anymore :( is there anything I can do to tighten it?? Thanks!

Please help! I’m so close to finishing this rug but every time I tuft, it pulls more, so it isn’t tight anymore :( is there anything I can do to tighten it?? Thanks!