diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 004a2a8..5182ee6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [20.9.0, 22, 24]
+        node-version: [20.19.0, 22, 24]
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a0fa03..67b985e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,12 @@ format and uses semantic versioning when versioned releases are published.
 - Tightened template file validation and aligned generated workflow action
   versions.
 
+### Fixed
+
+- Load the CLI version from its TypeScript module instead of a JSON import
+  attribute, and align the documented Node.js 20 minimum with the installed
+  development toolchain at Node.js 20.19.
+
 ## Release Links
 
 - Unreleased:
diff --git a/README.md b/README.md
index 413aa60..dcfca97 100644
--- a/README.md
+++ b/README.md
@@ -144,7 +144,7 @@ MIT © [Roger Chappel](https://github.com/rogerchappel)
 
 ## Development
 
-Typegap supports Node.js 20.9+ and 22 or newer. Node.js 21
+Typegap supports Node.js 20.19+ and 22 or newer. Node.js 21
 is not supported because the shipped runtime dependency set does not support
 those releases.
 
diff --git a/package-lock.json b/package-lock.json
index ea68ae5..6478407 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,7 +29,7 @@
         "vitest": "^3.0.0"
       },
       "engines": {
-        "node": "^20.9.0 || >=22.0.0"
+        "node": "^20.19.0 || >=22.0.0"
       }
     },
     "node_modules/@ampproject/remapping": {
diff --git a/package.json b/package.json
index ddfab96..3d10ebf 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
   },
   "homepage": "https://github.com/rogerchappel/typegap#readme",
   "engines": {
-    "node": "^20.9.0 || >=22.0.0"
+    "node": "^20.19.0 || >=22.0.0"
   },
   "dependencies": {
     "@typescript-eslint/typescript-estree": "^8.0.0",
diff --git a/src/cli.test.ts b/src/cli.test.ts
index 026a050..d40b812 100644
--- a/src/cli.test.ts
+++ b/src/cli.test.ts
@@ -1,5 +1,6 @@
 import { describe, it, expect } from 'vitest';
 import { execSync } from 'node:child_process';
+import { readFileSync } from 'node:fs';
 
 describe('CLI integration', () => {
   const cli = 'npx tsx src/cli.ts';
@@ -10,6 +11,12 @@ describe('CLI integration', () => {
     expect(output).toContain('TypeScript type coverage auditor');
   });
 
+  it('reports the package version', () => {
+    const packageJson = JSON.parse(readFileSync('package.json', 'utf8')) as { version: string };
+    const output = execSync(`${cli} --version`, { encoding: 'utf-8' });
+    expect(output.trim()).toBe(packageJson.version);
+  });
+
   it('scans the fixtures directory', () => {
     const output = execSync(`${cli} fixtures/fully-typed`, { encoding: 'utf-8' });
     expect(output).toContain('100.0%');
diff --git a/src/cli.ts b/src/cli.ts
index 2ce3782..fdfc9f4 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -10,14 +10,14 @@ import { resolve } from 'node:path';
 import { existsSync } from 'node:fs';
 import { analyzeDirectory } from './analyzer.js';
 import { generateReport, saveBaseline } from './reporter.js';
-import packageJson from '../package.json' with { type: 'json' };
+import { version } from './version.js';
 
 const program = new Command();
 
 program
   .name('typegap')
   .description('TypeScript type coverage auditor — find the holes without compiling')
-  .version(packageJson.version)
+  .version(version)
   .argument('[directory]', 'directory to scan', '.')
   .option('--ignore <patterns>', 'glob patterns to ignore (comma-separated)')
   .option('--format <type>', 'output format: text or json', 'text')