diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5444f97..f5553d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 0.0.12
+
+ - fix bug: browserify.bundle is asynchronous thus we need wait before we make `main` folder.
+ - upgrade LiveScript version to 1.6.0.
+
+
 # 0.0.11
 
  - take care of name/version that contains `@` or `/` characters.
diff --git a/cli.js b/cli.js
index 0192667..adee548 100755
--- a/cli.js
+++ b/cli.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-// Generated by LiveScript 1.3.1
+// Generated by LiveScript 1.6.0
 var fs, path, fsExtra, browserify, yargs, argv, useSymlink, fed, slice$ = [].slice;
 fs = require('fs');
 path = require('path');
@@ -19,7 +19,7 @@ fed = import$({
   modules: []
 }, JSON.parse(fs.readFileSync("package.json").toString()).frontendDependencies || {});
 (fed.modules || []).map(function(obj){
-  var root, info, id, ref$, i$, name, version, ret, that, desdir, maindir, b, srcdir;
+  var root, info, id, ref$, i$, name, version, ret, that, desdir, maindir, p, srcdir;
   obj = typeof obj === 'string' ? {
     name: obj
   } : obj;
@@ -46,10 +46,19 @@ fed = import$({
   fsExtra.removeSync(desdir);
   fsExtra.ensureDirSync(desdir);
   if (obj.browserify) {
-    b = browserify(typeof obj.browserify === 'object' ? obj.browserify : void 8);
-    b.require(obj.name);
-    b.bundle().pipe(fs.createWriteStream(path.join(desdir, name + ".js")));
-    console.log(" -- (module -> browserify) -> " + desdir + " ");
+    p = new Promise(function(res, rej){
+      var b;
+      b = browserify(typeof obj.browserify === 'object' ? obj.browserify : void 8);
+      b.require(obj.name);
+      return b.bundle(function(e, buf){
+        if (e) {
+          return rej(new Error(e));
+        }
+        fs.writeFileSync(path.join(desdir, name + ".js"), buf);
+        console.log(" -- (module -> browserify) -> " + desdir + " ");
+        return res();
+      });
+    });
   } else {
     if (obj.dir) {
       srcdir = path.join(root, obj.dir);
@@ -60,14 +69,18 @@ fed = import$({
       }
     }
     fsExtra.copySync(srcdir, desdir);
-    console.log(" -- " + srcdir + " -> " + desdir + " ");
-  }
-  fsExtra.removeSync(maindir);
-  if (useSymlink) {
-    return fsExtra.ensureSymlinkSync(desdir, maindir);
-  } else {
-    return fsExtra.copySync(desdir, maindir);
+    p = Promise.resolve().then(function(){
+      return console.log(" -- " + srcdir + " -> " + desdir + " ");
+    });
   }
+  return p.then(function(){
+    fsExtra.removeSync(maindir);
+    if (useSymlink) {
+      return fsExtra.ensureSymlinkSync(desdir, maindir);
+    } else {
+      return fsExtra.copySync(desdir, maindir);
+    }
+  });
 });
 function import$(obj, src){
   var own = {}.hasOwnProperty;
diff --git a/lib/main.ls b/lib/main.ls
index 7f4aa86..63c48bc 100644
--- a/lib/main.ls
+++ b/lib/main.ls
@@ -40,17 +40,22 @@ fed = {root: '.', modules: []} <<< (JSON.parse(fs.read-file-sync "package.json"
   fs-extra.remove-sync desdir
   fs-extra.ensure-dir-sync desdir
   if obj.browserify =>
-    b = browserify(if typeof(obj.browserify) == \object => obj.browserify)
-    b.require(obj.name)
-    b.bundle!pipe fs.createWriteStream(path.join(desdir, "#name.js"))
-    console.log " -- (module -> browserify) -> #desdir "
+    p = new Promise (res, rej) ->
+      b = browserify(if typeof(obj.browserify) == \object => obj.browserify)
+      b.require(obj.name)
+      b.bundle (e, buf) ->
+        if e => return rej new Error(e)
+        fs.write-file-sync path.join(desdir, "#name.js"), buf
+        console.log " -- (module -> browserify) -> #desdir "
+        res!
   else
     if obj.dir => srcdir = path.join(root, obj.dir)
     else
       srcdir = path.join(root, "dist")
       if !fs.exists-sync(srcdir) => srcdir = root
     fs-extra.copy-sync srcdir, desdir
-    console.log " -- #srcdir -> #desdir "
-  fs-extra.remove-sync maindir
-  if use-symlink => fs-extra.ensure-symlink-sync desdir, maindir
-  else fs-extra.copy-sync desdir, maindir
+    p = Promise.resolve!then -> console.log " -- #srcdir -> #desdir "
+  p.then ->
+    fs-extra.remove-sync maindir
+    if use-symlink => fs-extra.ensure-symlink-sync desdir, maindir
+    else fs-extra.copy-sync desdir, maindir
diff --git a/package-lock.json b/package-lock.json
index ab1db0f..82b95fb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "fedep",
-  "version": "0.0.11",
+  "version": "0.0.12",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -13,16 +13,6 @@
         "through": ">=2.2.7 <3"
       }
     },
-    "LiveScript": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/LiveScript/-/LiveScript-1.3.1.tgz",
-      "integrity": "sha1-kBlsSFP+SaPGGCsF5PK69ZjmhW8=",
-      "dev": true,
-      "requires": {
-        "optionator": "~0.4.0",
-        "prelude-ls": "~1.1.1"
-      }
-    },
     "acorn": {
       "version": "7.4.1",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.1.tgz",
@@ -631,12 +621,6 @@
         "safe-buffer": "^5.1.1"
       }
     },
-    "fast-levenshtein": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-1.0.7.tgz",
-      "integrity": "sha1-AXjc3uAjuSkFGTrwlZ6KdjnP3Lk=",
-      "dev": true
-    },
     "fast-safe-stringify": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz",
@@ -902,14 +886,54 @@
         "stream-splicer": "^2.0.0"
       }
     },
-    "levn": {
-      "version": "0.2.5",
-      "resolved": "https://registry.npmjs.org/levn/-/levn-0.2.5.tgz",
-      "integrity": "sha1-uo0znQykphDjo/FFucr0iAcVUFQ=",
+    "livescript": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/livescript/-/livescript-1.6.0.tgz",
+      "integrity": "sha512-x5q+sx1/rOPmx6Fp04gjUqRr4XL5djqXPctu6FPBktm7d7gfRrKkYj9PhMeKT8OKE1bfL92njzAwaN8JCj8kRQ==",
       "dev": true,
       "requires": {
-        "prelude-ls": "~1.1.0",
-        "type-check": "~0.3.1"
+        "optionator": "~0.8.2",
+        "prelude-ls": "~1.1.2",
+        "source-map": "=0.6.1",
+        "source-map-support": "=0.5.6"
+      },
+      "dependencies": {
+        "fast-levenshtein": {
+          "version": "2.0.6",
+          "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
+          "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
+          "dev": true
+        },
+        "levn": {
+          "version": "0.3.0",
+          "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
+          "integrity": "sha1-OwmSTt+fCDwEkP3UwLxEIeBHZO4=",
+          "dev": true,
+          "requires": {
+            "prelude-ls": "~1.1.2",
+            "type-check": "~0.3.2"
+          }
+        },
+        "optionator": {
+          "version": "0.8.3",
+          "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.3.tgz",
+          "integrity": "sha512-+IW9pACdk3XWmmTXG8m3upGUJst5XRGzxMRjXzAuJ1XnIFNvfhjjIuYkDvysnPQ7qzqVzLt78BCruntqRhWQbA==",
+          "dev": true,
+          "requires": {
+            "deep-is": "~0.1.3",
+            "fast-levenshtein": "~2.0.6",
+            "levn": "~0.3.0",
+            "prelude-ls": "~1.1.2",
+            "type-check": "~0.3.2",
+            "word-wrap": "~1.2.3"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
       }
     },
     "lodash.memoize": {
@@ -1048,20 +1072,6 @@
         "wrappy": "1"
       }
     },
-    "optionator": {
-      "version": "0.4.0",
-      "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.4.0.tgz",
-      "integrity": "sha1-55x5Jv99VQ+SxxTfw9oh14d+vqY=",
-      "dev": true,
-      "requires": {
-        "deep-is": "~0.1.2",
-        "fast-levenshtein": "~1.0.0",
-        "levn": "~0.2.5",
-        "prelude-ls": "~1.1.0",
-        "type-check": "~0.3.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
     "os-browserify": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/os-browserify/-/os-browserify-0.3.0.tgz",
@@ -1294,6 +1304,24 @@
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
     },
+    "source-map-support": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.6.tgz",
+      "integrity": "sha512-N4KXEz7jcKqPf2b2vZF11lQIz9W5ZMuUcIOGj243lduidkf2fjkVKJS9vNxVWn3u/uxX38AcE8U9nnH9FPcq+g==",
+      "dev": true,
+      "requires": {
+        "buffer-from": "^1.0.0",
+        "source-map": "^0.6.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
+      }
+    },
     "stream-browserify": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/stream-browserify/-/stream-browserify-3.0.0.tgz",
@@ -1573,10 +1601,10 @@
         "is-typed-array": "^1.1.3"
       }
     },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
       "dev": true
     },
     "wrap-ansi": {
diff --git a/package.json b/package.json
index 552493f..da41b1b 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "cli.js"
   ],
   "description": "Frontend dependency installer",
-  "version": "0.0.11",
+  "version": "0.0.12",
   "homepage": "https://github.com/plotdb/fedep",
   "repository": {
     "type": "git",
@@ -22,7 +22,7 @@
     "yargs": "^16.1.0"
   },
   "devDependencies": {
-    "LiveScript": ">=1.2.0"
+    "livescript": "^1.6.0"
   },
   "bin": {
     "fedep": "./cli.js"