diff --git a/tasks/JULES_PROMPTS.md b/tasks/JULES_PROMPTS.md
index 26d26b7..2a2b3ca 100644
--- a/tasks/JULES_PROMPTS.md
+++ b/tasks/JULES_PROMPTS.md
@@ -15,7 +15,7 @@ and
 | **Prompt 1.2** | SDK Real-Time Invalidation Event Bus (`@auth-yes/sdk`) | ✅ **COMPLETE**          | `sdk/mod.ts`                                  |
 | **Prompt 3.2** | Native SIMD Argon2id Derivation in `spire_ffi`         | ✅ **COMPLETE**          | `spire_ffi/src/lib.rs`, `server/spire_ffi.ts` |
 | **Prompt 2.2** | Ghost Cockpit Protocol & WebSocket Freeze/Re-Auth      | ✅ **COMPLETE**          | `docs/GHOST_COCKPIT_SPEC.md`, `sdk/hono.ts`   |
-| **Prompt 2.1** | RFC 9421 HTTP Signatures & `Signature-Key` (`hwk`)     | ⏳ **IN PROGRESS**       | `server/http_signatures.ts`, `sdk/`           |
+| **Prompt 2.1** | RFC 9421 HTTP Signatures & `Signature-Key` (`hwk`)     | ✅ **COMPLETE**          | `server/http_signatures.ts`, `server/main.ts` |
 | **Prompt 3.1** | WebAuthn PRF Extension & Progressive Fallback          | ⏳ **PENDING (Phase 3)** | `server/main.ts`, `ui/views/`                 |
 | **Prompt 3.3** | 2-of-3 SSS Recovery Matrix (Wasm/Rust)                 | ⏳ **PENDING (Phase 3)** | `ui/views/recovery.tsx`                       |
 | **Prompt 3.4** | RFC 6962 Merkle Tree Audit Ledger & STH                | ⏳ **PENDING (Phase 3)** | `server/audit_merkle.ts`                      |
@@ -47,7 +47,10 @@ _Completed task:
 
 ---
 
-### Prompt 2.1: RFC 9421 HTTP Message Signatures & Autonomous `Signature-Key` — [STATUS: ⏳ IN PROGRESS]
+### Prompt 2.1: RFC 9421 HTTP Message Signatures & Autonomous `Signature-Key` — [STATUS: ✅ COMPLETE]
+
+_Completed task:
+`tasks/complete/2026-0824.02.jul.feat.http-sigs.rfc9421-verification-0436.md`_
 
 ```text
 **Role:** Act as a System Analyst and Solutions Architect. Do not execute code or modify the codebase during this session. Your sole deliverable is to generate a task file in tasks/new/.