diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65261b8..677af20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+## 0.5.0
+
+- Decomposed oversized lifecycle, gateway-runtime, private-I/O, and audit
+  modules behind their existing compatibility facades, enforced by a
+  1,200-line production-module size ratchet.
 - Added a built-in Kimi K3 Hermes template with an optional compatible endpoint
   override and an explicit, private `zeus audit init` Kimi K3 configuration.
 - Replaced the vulnerable cryptography and Pillow pins in the hash-locked Hermes
diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 1318053..66cd35e 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -2,10 +2,9 @@
 
 ## Current status
 
-The latest stable release is Zeus v0.4.0. The `main` branch is the
-v0.5.0.dev0 development line. Zeus remains alpha software with a local-first,
-host-local scope. It owns profiles, processes, lifecycle safety, and
-reconciliation evidence on one host.
+The latest stable release is Zeus v0.5.0. It remains alpha software with a
+local-first, host-local scope. It owns profiles, processes, lifecycle safety,
+and reconciliation evidence on one host.
 
 ## Shipped
 
diff --git a/docs/openapi.json b/docs/openapi.json
index b38dc0d..c9241cd 100644
--- a/docs/openapi.json
+++ b/docs/openapi.json
@@ -2,7 +2,7 @@
   "openapi": "3.1.0",
   "info": {
     "title": "Zeus Local API",
-    "version": "0.5.0.dev0",
+    "version": "0.5.0",
     "description": "Local JSON API for managing Hermes bot profiles and gateway lifecycle."
   },
   "servers": [
diff --git a/tests/test_api.py b/tests/test_api.py
index 4784920..f34d734 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -2665,8 +2665,9 @@ def test_valid_key_bypasses_exhausted_global_invalid_auth_bucket(self) -> None:
 
             rows = wait_for_access_rows(state_dir, 4)
 
-        limited_row = rows[2]
-        self.assertEqual(response_headers["x-request-id"], limited_row["request_id"])
+        limited_row = next(
+            row for row in rows if row["request_id"] == response_headers["x-request-id"]
+        )
         self.assertEqual(429, limited_row["status"])
         self.assertEqual("auth_rate_limited", limited_row["error_code"])
         self.assertEqual("/bots", limited_row["route"])
@@ -2855,8 +2856,9 @@ def test_rate_limited_mutation_creates_no_idempotency_claim_and_is_correlated(se
             self.assertEqual(0, claim_count)
             rows = wait_for_access_rows(state_dir, 2)
 
-        limited_row = rows[1]
-        self.assertEqual(response_headers["x-request-id"], limited_row["request_id"])
+        limited_row = next(
+            row for row in rows if row["request_id"] == response_headers["x-request-id"]
+        )
         self.assertEqual(429, limited_row["status"])
         self.assertEqual("mutation_rate_limited", limited_row["error_code"])
         self.assertEqual("/bots/{bot_id}/start", limited_row["route"])
diff --git a/zeus/__init__.py b/zeus/__init__.py
index d10309f..e9ce495 100644
--- a/zeus/__init__.py
+++ b/zeus/__init__.py
@@ -2,4 +2,4 @@
 
 __all__ = ["__version__"]
 
-__version__ = "0.5.0.dev0"
+__version__ = "0.5.0"