Is it safe to upgrade pgvector to 0.8.0 before running migration 20251007123645?

Self-hosting support
1

Hello everyone,

I’m preparing an upgrade from Discourse 3.4.5 to 2026.1 and I noticed the migration 20251007123645_upgrade_pg_vector080_take2, which updates pgvector to 0.8.0 if needed.

My question is:

Would it be safe to manually upgrade pgvector to 0.8.0 in the current database before running the Discourse upgrade and its migration?

In other words, will Discourse 3.4.5 continue to work correctly with pgvector 0.8.0, or are there any known incompatibilities?

My goal is to upgrade pgvector first, and then upgrade Discourse separately.

Environment

  • Discourse version: 3.4.5

  • Target version: 2026.1

Thanks in advance.

2

Yes, that is safe. And it is common scenario for people running in hosted PostgreSQL services.

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