pihole -up found an update for Core now, will update when all finishes.
Looks like it's all on release/4.0 now, thanks for the fix! 
*** [ DIAGNOSING ]: Core version
[i] Core: v3.3.1 (How do I update Pi-hole?)
[i] Branch: release/v4.0 (The pihole Command With Examples)
[i] Commit: v3.3.1-366-g1844bf1
*** [ DIAGNOSING ]: Web version
[i] Web: v3.3 (How do I update Pi-hole?)
[i] Branch: release/v4.0 (The pihole Command With Examples)
[i] Commit: v3.3-235-g97967f6
*** [ DIAGNOSING ]: FTL version
[✓] FTL: vDev-8e56b61 (How do I update Pi-hole?)