diff --git a/packages/create-fleck/package.json b/packages/create-fleck/package.json
index f72394a..ade2f04 100644
--- a/packages/create-fleck/package.json
+++ b/packages/create-fleck/package.json
@@ -27,7 +27,8 @@
   ],
   "dependencies": {
     "@flecks/core": "^2.0.3",
-    "@flecks/create-app": "^2.0.3"
+    "@flecks/create-app": "^2.0.3",
+    "@inquirer/prompts": "^3.3.0"
   },
   "devDependencies": {
     "@flecks/fleck": "^2.0.3"
diff --git a/packages/create-fleck/src/cli.js b/packages/create-fleck/src/cli.js
index 3febc48..97c6210 100644
--- a/packages/create-fleck/src/cli.js
+++ b/packages/create-fleck/src/cli.js
@@ -1,8 +1,9 @@
-import {stat} from 'fs/promises';
+import {readFile, stat, writeFile} from 'fs/promises';
 import {join, normalize} from 'path';
 
 import {build, move, validate} from '@flecks/create-app/server';
-import {Flecks} from '@flecks/core/server';
+import {dumpYml, Flecks, loadYml} from '@flecks/core/server';
+import {confirm} from '@inquirer/prompts';
 
 const {
   FLECKS_CORE_ROOT = process.cwd(),
@@ -10,7 +11,7 @@ const {
 
 const cwd = normalize(FLECKS_CORE_ROOT);
 
-const hasPackages = async (cwd) => {
+const checkIsMonorepo = async (cwd) => {
   try {
     await stat(join(cwd, 'packages'));
     return true;
@@ -47,7 +48,7 @@ const target = async (name) => {
   let scope;
   if (1 === parts.length) {
     pkg = name;
-    if (await hasPackages(cwd)) {
+    if (await checkIsMonorepo(cwd)) {
       scope = await monorepoScope(cwd);
     }
     return [scope, pkg];
@@ -56,12 +57,20 @@ const target = async (name) => {
 };
 
 const create = async (flecks) => {
+  const isMonorepo = await checkIsMonorepo(cwd);
   const [scope, pkg] = await target(process.argv[2]);
-  const path = scope && (await hasPackages(cwd)) ? join(cwd, 'packages') : cwd;
+  const path = scope && isMonorepo ? join(cwd, 'packages') : cwd;
   const name = [scope, pkg].filter((e) => !!e).join('/');
   const destination = join(path, pkg);
   await move(name, join(__dirname, 'template'), destination, 'fleck', flecks);
   await build(destination);
+  if (isMonorepo && await confirm({message: 'Add fleck to `build/flecks.yml`?'})) {
+    const key = `${name}:${join('.', 'packages', pkg)}`;
+    const ymlPath = join(FLECKS_CORE_ROOT, 'build', 'flecks.yml');
+    let yml = loadYml(await readFile(ymlPath));
+    yml = Object.fromEntries(Object.entries(yml).concat([[key, {}]]));
+    await writeFile(ymlPath, dumpYml(yml, {forceQuotes: true, sortKeys: true}));
+  }
 };
 
 (async () => {