diff --git a/.gitea/workflows/pr-checks.yml b/.gitea/workflows/pr-checks.yml
index 8fbf471..2ad1be6 100644
--- a/.gitea/workflows/pr-checks.yml
+++ b/.gitea/workflows/pr-checks.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: '22'
+          node-version: '22.23.4'
           cache: npm
 
       - name: Install
diff --git a/Dockerfile b/Dockerfile
index 888aca4..9848166 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,7 @@
 # ---------------------------------------------------------------------------------------
 # Stage 1 — build
 # ---------------------------------------------------------------------------------------
-FROM node:22-bookworm-slim AS build
+FROM node:22.23.4-bookworm-slim AS build
 
 WORKDIR /build
 
@@ -54,7 +54,7 @@ RUN mkdir -p /split \
 # ---------------------------------------------------------------------------------------
 # Stage 2 — runtime
 # ---------------------------------------------------------------------------------------
-FROM node:22-bookworm-slim AS runtime
+FROM node:22.23.4-bookworm-slim AS runtime
 
 WORKDIR /app
 
diff --git a/README.md b/README.md
index 3054dee..8534169 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ npm run build        # → dist/  (prerendered pages + the Node server entry)
 npm start            # serve the built site
 ```
 
-Node 22 LTS or newer. Nothing else — no database, no game server, no container runtime.
+Node 22.23.4+ (or 24.22.1+); older builds carry the Node2Shell Brotli bug, CVE-2026-111497. Nothing else — no database, no game server, no container runtime.
 
 ## Running it in production