diff --git a/README.md b/README.md
index 081ce22..25af8af 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ curl -fsSL https://feynman.is/install | bash
 irm https://feynman.is/install.ps1 | iex
 ```
 
-If you install via `pnpm` or `bun` instead of the standalone bundle, Feynman requires Node.js `20.18.1` or newer.
+If you install via `pnpm` or `bun` instead of the standalone bundle, Feynman requires Node.js `20.19.0` or newer.
 
 ### Skills Only
 
diff --git a/bin/feynman.js b/bin/feynman.js
index 9c9111f..f94acb6 100755
--- a/bin/feynman.js
+++ b/bin/feynman.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-const MIN_NODE_VERSION = "20.18.1";
+const MIN_NODE_VERSION = "20.19.0";
 
 function parseNodeVersion(version) {
   const [major = "0", minor = "0", patch = "0"] = version.replace(/^v/, "").split(".");
diff --git a/package-lock.json b/package-lock.json
index 5fe6b4f..82072f8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "typescript": "^5.9.3"
       },
       "engines": {
-        "node": ">=20.18.1"
+        "node": ">=20.19.0"
       }
     },
     "node_modules/@anthropic-ai/sdk": {
diff --git a/package.json b/package.json
index 7157408..c0abd52 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "license": "MIT",
   "type": "module",
   "engines": {
-    "node": ">=20.18.1"
+    "node": ">=20.19.0"
   },
   "bin": {
     "feynman": "bin/feynman.js"
diff --git a/scripts/check-node-version.mjs b/scripts/check-node-version.mjs
index 8b4170c..771836d 100644
--- a/scripts/check-node-version.mjs
+++ b/scripts/check-node-version.mjs
@@ -1,4 +1,4 @@
-const MIN_NODE_VERSION = "20.18.1";
+const MIN_NODE_VERSION = "20.19.0";
 
 function parseNodeVersion(version) {
 	const [major = "0", minor = "0", patch = "0"] = version.replace(/^v/, "").split(".");
diff --git a/src/system/node-version.ts b/src/system/node-version.ts
index 4bd7bb8..bf349af 100644
--- a/src/system/node-version.ts
+++ b/src/system/node-version.ts
@@ -1,4 +1,4 @@
-export const MIN_NODE_VERSION = "20.18.1";
+export const MIN_NODE_VERSION = "20.19.0";
 
 type ParsedNodeVersion = {
 	major: number;
diff --git a/tests/node-version.test.ts b/tests/node-version.test.ts
index 178d9bf..fca23eb 100644
--- a/tests/node-version.test.ts
+++ b/tests/node-version.test.ts
@@ -9,10 +9,10 @@ import {
 } from "../src/system/node-version.js";
 
 test("isSupportedNodeVersion enforces the exact minimum floor", () => {
-	assert.equal(isSupportedNodeVersion("20.18.1"), true);
+	assert.equal(isSupportedNodeVersion("20.19.0"), true);
 	assert.equal(isSupportedNodeVersion("20.19.0"), true);
 	assert.equal(isSupportedNodeVersion("21.0.0"), true);
-	assert.equal(isSupportedNodeVersion("20.18.0"), false);
+	assert.equal(isSupportedNodeVersion("20.18.1"), false);
 	assert.equal(isSupportedNodeVersion("18.17.0"), false);
 });
 
@@ -30,6 +30,6 @@ test("ensureSupportedNodeVersion throws a guided upgrade message", () => {
 test("unsupported version guidance reports the detected version", () => {
 	const lines = getUnsupportedNodeVersionLines("18.17.0");
 
-	assert.equal(lines[0], "feynman requires Node.js 20.18.1 or later (detected 18.17.0).");
+	assert.equal(lines[0], "feynman requires Node.js 20.19.0 or later (detected 18.17.0).");
 	assert.ok(lines.some((line) => line.includes("curl -fsSL https://feynman.is/install | bash")));
 });
diff --git a/website/package-lock.json b/website/package-lock.json
index 576e2bd..1eb6825 100644
--- a/website/package-lock.json
+++ b/website/package-lock.json
@@ -7,6 +7,9 @@
     "": {
       "name": "website",
       "version": "0.0.1",
+      "engines": {
+        "node": ">=20.19.0"
+      },
       "dependencies": {
         "@astrojs/react": "^4.4.2",
         "@fontsource-variable/ibm-plex-sans": "^5.2.8",
diff --git a/website/package.json b/website/package.json
index 25412ab..a1b56e9 100644
--- a/website/package.json
+++ b/website/package.json
@@ -3,6 +3,9 @@
   "type": "module",
   "version": "0.0.1",
   "private": true,
+  "engines": {
+    "node": ">=20.19.0"
+  },
   "scripts": {
     "dev": "astro dev",
     "build": "node ../scripts/sync-website-installers.mjs && astro build",
diff --git a/website/src/content/docs/getting-started/installation.md b/website/src/content/docs/getting-started/installation.md
index 691cf4a..907a9b4 100644
--- a/website/src/content/docs/getting-started/installation.md
+++ b/website/src/content/docs/getting-started/installation.md
@@ -77,7 +77,7 @@ You can also pin an exact version by replacing `stable` with a version such as `
 
 ## pnpm
 
-If you already have Node.js `20.18.1` or newer installed, you can install Feynman globally via `pnpm`:
+If you already have Node.js `20.19.0` or newer installed, you can install Feynman globally via `pnpm`:
 
 ```bash
 pnpm add -g @companion-ai/feynman
@@ -91,7 +91,7 @@ pnpm dlx @companion-ai/feynman
 
 ## bun
 
-`bun add -g` and `bunx` still use your local Node runtime for Feynman itself, so the same Node.js `20.18.1+` requirement applies.
+`bun add -g` and `bunx` still use your local Node runtime for Feynman itself, so the same Node.js `20.19.0+` requirement applies.
 
 ```bash
 bun add -g @companion-ai/feynman