diff --git a/.esbuild/build.ts b/.esbuild/build.ts
index 143546bc1..a48e08f31 100644
--- a/.esbuild/build.ts
+++ b/.esbuild/build.ts
@@ -1,5 +1,5 @@
 import { build } from 'esbuild';
-import { mkdir, readFile, rename, writeFile } from 'node:fs/promises';
+import { cp, mkdir, readFile, rename, writeFile } from 'node:fs/promises';
 import { packageOptions } from '../.build/common.js';
 import { generateLangium } from '../.build/generateLangium.js';
 import type { MermaidBuildOptions } from './util.js';
@@ -83,6 +83,7 @@ const buildTinyMermaid = async () => {
     './packages/mermaid/dist/mermaid.tiny.min.js',
     './packages/tiny/dist/mermaid.tiny.min.js'
   );
+  await cp('./packages/mermaid/CHANGELOG.md', './packages/tiny/CHANGELOG.md');
   // Copy version from mermaid's package.json to tiny's package.json
   const mermaidPkg = JSON.parse(await readFile('./packages/mermaid/package.json', 'utf8'));
   const tinyPkg = JSON.parse(await readFile('./packages/tiny/package.json', 'utf8'));