Raspberry Pi 3 | Omnibus Update from 8.7.7 to 8.9

About a months ago, I followed the install guide for the Raspberry Pi 2 on Raspbian in order to install the Omnibus package. As stated in the description, I am using a Raspberry Pi 3 instead of a 2. Everything works great and ran smoothly afterwards.

A few weeks later, I noticed that Gitlab was letting me know I should update to the latest firmware based on the /help page. I then followed the update documentation and ran a sudo apt-get update and sudo apt-get install gitlab-ce combo as described under having an omnibus package.

Everything ran well, but the latest gitlab-ce package brought me up to 8.7.7 instead of what appears to be 8.9 on the main website of gitlab. Does the respiratory used by the Raspberry Pi lag behind the main Debian versions? If not, what would I be doing wrong through the updating process?