diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82f1aa12ded..2b4a6630352 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ Docs: https://docs.openclaw.ai
 - Telegram/documents: drop leaked binary caption bytes from inbound Telegram text handling so document uploads like `.mobi` or `.epub` no longer explode prompt token counts. (#66663) Thanks @joelnishanth.
 - Gateway/auth: resolve the active gateway bearer per-request on the HTTP server and the HTTP upgrade handler via `getResolvedAuth()`, mirroring the WebSocket path, so a secret rotated through `secrets.reload` or config hot-reload stops authenticating on `/v1/*`, `/tools/invoke`, plugin HTTP routes, and the canvas upgrade path immediately instead of remaining valid on HTTP until gateway restart. (#66651) Thanks @mmaps.
 - Agents/compaction: cap the compaction reserve-token floor to the model context window so small-context local models (e.g. Ollama with 16K tokens) no longer trigger context-overflow errors or infinite compaction loops on every prompt. (#65671) Thanks @openperf.
+- Agents/OpenAI Responses: classify the exact `Unknown error (no error details in response)` transport failure as failover reason `unknown` so assistant/model fallback still runs for that no-details failure path. (#65254) Thanks @OpenCodeEngineer.
 
 ## 2026.4.14
 
@@ -97,7 +98,6 @@ Docs: https://docs.openclaw.ai
 - CLI/approvals: raise the default `openclaw approvals get` gateway timeout and report config-load timeouts explicitly, so slow hosts stop showing a misleading `Config unavailable.` note when the approvals snapshot succeeds but the follow-up config RPC needs more time. (#66239) Thanks @neeravmakwana.
 - Media/store: honor configured agent media limits when saving generated media and persisting outbound reply media, so the store no longer hard-stops those flows at 5 MB before the configured limit applies. (#66229) Thanks @neeravmakwana and @vincentkoc.
 - Plugins/setup-entry: preserve separate setup-entry secrets exports when loading bundled setup-runtime channels, so setup-mode flows keep the channel secret contract for split plugin + secrets entrypoints. (#66261) Thanks @hxy91819.
-- Agents/OpenAI Responses: classify the exact `Unknown error (no error details in response)` transport failure as failover reason `unknown` so assistant/model fallback still runs for that no-details failure path. (#65254) Thanks @OpenCodeEngineer.
 
 ## 2026.4.12