diff --git a/src/content/docs/docs/architecture/protocol-versions.mdx b/src/content/docs/docs/architecture/protocol-versions.mdx
index c14d451..dbaf1ae 100644
--- a/src/content/docs/docs/architecture/protocol-versions.mdx
+++ b/src/content/docs/docs/architecture/protocol-versions.mdx
@@ -4,12 +4,13 @@ description: One number, declared in three repositories, that decides whether a
 ---
 
 import { Aside } from '@astrojs/starlight/components';
+import platform from '../../../../data/platform.json';
 
 The loopback wire protocol between the game plugin and the sidecar is a **versioned
 compatibility contract**, not a build dependency. Nothing compiles the three sides together,
 so the number is what stops a mismatch from being discovered as corrupted data.
 
-The current protocol is **4**.
+The current protocol is **{platform.protocol}**.
 
 ## Three declaration sites
 
@@ -17,8 +18,8 @@ The same number is written down in three places, and they must move together.
 
 | Where | What declares it |
 |---|---|
-| `link/sidecar/src/main.rs` | `pub const PROTOCOL_VERSION: u32 = 4` — what the sidecar speaks |
-| `servuo-plugins/overlay.toml` | `protocol = 4` — what the plugin overlay speaks |
+| `link/sidecar/src/main.rs` | `PROTOCOL_VERSION`, currently {platform.protocol} — what the sidecar speaks |
+| `servuo-plugins/overlay.toml` | `protocol`, currently {platform.protocol} — what the plugin overlay speaks |
 | The bundle manifest | Copied from `overlay.toml` by CI, so a released pair carries its own claim |
 
 <Aside type="caution" title="Bump the overlay in the same PR as the emitters">
@@ -44,19 +45,19 @@ allowed to be chosen independently.
 
 ## What a bump obliges
 
-Changing a message shape means editing every side plus the specification. A protocol-4
-change touched:
+Changing a message shape means editing every side plus the specification. The most recent
+bump touched:
 
 | Repository | What had to change |
 |---|---|
 | `servuo-plugins` | The emitters, the config keys, and `overlay.toml` |
-| `link` | `PROTOCOL_VERSION`, a store migration, and the projections |
+| `link` | `PROTOCOL_VERSION`, and the projections |
 | `module-uo` | The tables, the ingest, and the kind-to-feature map |
 | `docs` | The protocol document and the integration guide |
 
-Note `link`'s entry: **a protocol bump can require a store migration**, because the sidecar
-persists what it forwards. That is not automatic, and version 4 was the first bump that
-needed one.
+**A protocol bump can also require a store migration**, because the sidecar persists what it
+forwards. That is not automatic — version 4 needed one and version 5 did not, because
+version 5 only widened frames the store already keeps whole.
 
 ## This is not the module API version
 
@@ -92,8 +93,10 @@ What is worth inheriting is the **shape**:
 
 ## Canonical documents
 
+[`link/v5.md`](https://gitea.whitlocktech.com/RunicGateway/docs/src/branch/main/link/v5.md)
+is the current protocol's record, including its cross-repository obligations, and
 [`link/v4.md`](https://gitea.whitlocktech.com/RunicGateway/docs/src/branch/main/link/v4.md)
-is the protocol-4 record, including its cross-repository obligations;
+the one before it;
 [`link/PLAN.md`](https://gitea.whitlocktech.com/RunicGateway/docs/src/branch/main/link/PLAN.md)
 §7 is the wire protocol, and
 [`link/INTEGRATION.md`](https://gitea.whitlocktech.com/RunicGateway/docs/src/branch/main/link/INTEGRATION.md)
diff --git a/src/data/platform.json b/src/data/platform.json
index 3da8d3e..040ff55 100644
--- a/src/data/platform.json
+++ b/src/data/platform.json
@@ -14,9 +14,9 @@
 
   "verifiedOn": "2026-08-19",
 
-  "protocol": 4,
+  "protocol": 5,
 
-  "moduleApi": "1.6.0",
+  "moduleApi": "1.9.0",
 
   "bundle": {
     "tag": "2026.08.19",