diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b15ee7..6aa46a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
# Hermes Web UI -- Changelog
+## [v0.50.23] Add OpenCode Zen and Go provider support (fixes #362)
+
+- `api/config.py`: Add `opencode-zen` and `opencode-go` to `_PROVIDER_DISPLAY` — providers now show human-readable names in the UI instead of raw IDs
+- `api/config.py`: Add full model catalogs for both providers to `_PROVIDER_MODELS` — Zen (pay-as-you-go credits, 32 models) and Go (flat-rate $10/month, 7 models) now show the correct model list in the dropdown instead of falling through to the unknown-provider fallback
+- `api/config.py`: Add `OPENCODE_ZEN_API_KEY` / `OPENCODE_GO_API_KEY` to the env-var fallback detection path — providers are correctly detected as authenticated when keys are set in `.env`
+- `tests/test_opencode_providers.py`: 6 new tests covering display registration, model catalog registration, and env-var detection for both providers
+- 985 tests total (up from 979)
+
## [v0.50.22] Onboarding unblocked for reverse proxy / SSH tunnel deployments (fixes #390)
- `api/routes.py`: Onboarding setup endpoint now reads `X-Forwarded-For` and `X-Real-IP` headers before falling back to raw socket IP — reverse proxy (nginx/Caddy/Traefik) and SSH tunnel users are no longer incorrectly blocked
diff --git a/static/index.html b/static/index.html
index ed75913..eb17c21 100644
--- a/static/index.html
+++ b/static/index.html
@@ -528,7 +528,7 @@