diff --git a/docs/commands.md b/docs/commands.md
index 9b147707..d354acc6 100644
--- a/docs/commands.md
+++ b/docs/commands.md
@@ -235,6 +235,7 @@ Display question details. With `-g`/`-l`/`-x`, the code template would be auto g
     * golang
     * java
     * javascript
+    * kotlin
     * mysql
     * php
     * python
@@ -467,7 +468,7 @@ Display version information.
 Short:
 
     $ leetcode version
-    2.6.1
+    2.6.2
 
 Verbose:
 
@@ -477,7 +478,7 @@ Verbose:
     | | ___  ___| |_  ___  ___   __| | ___
     | |/ _ \/ _ \ __|/ __|/ _ \ / _` |/ _ \
     | |  __/  __/ |_  (__| (_) | (_| |  __/
-    |_|\___|\___|\__|\___|\___/ \__,_|\___|  CLI v2.6.1
+    |_|\___|\___|\__|\___|\___/ \__,_|\___|  CLI v2.6.2
 
     [Environment]
     Node                 v8.1.4
diff --git a/docs/releases.md b/docs/releases.md
index 7b78a5f3..77cce5eb 100644
--- a/docs/releases.md
+++ b/docs/releases.md
@@ -2,6 +2,10 @@
 layout: default
 title: Release Notes
 ---
+# 2.6.2
+* `submit`
+	* fixes beta ratio issue
+
 # 2.6.1
 * `submit`
     * fixes 500 error on windows.
diff --git a/lib/commands/submit.js b/lib/commands/submit.js
index 2209249b..ac6c649c 100644
--- a/lib/commands/submit.js
+++ b/lib/commands/submit.js
@@ -98,6 +98,7 @@ cmd.handler = function(argv) {
         //   printLine(result, 'Your runtime beats %d %% of %s submissions',
         //       ratio.toFixed(2), lang);
         // });
+        
       } else {
         result.testcase = result.testcase.slice(1, -1).replace(/\\n/g, '\n');
         printResult(result, 'error');
diff --git a/lib/config.js b/lib/config.js
index ed390f04..040d9b33 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -29,7 +29,8 @@ const DEFAULT_CONFIG = {
       'ruby',
       'rust',
       'scala',
-      'swift'
+      'swift',
+      'typescript'
     ],
     urls: {
       // base urls
diff --git a/lib/helper.js b/lib/helper.js
index c4f881aa..d256103e 100644
--- a/lib/helper.js
+++ b/lib/helper.js
@@ -45,7 +45,8 @@ const LANGS = [
   {lang: 'ruby',       ext: '.rb',         style: '#'},
   {lang: 'rust',       ext: '.rs',         style: 'c'},
   {lang: 'scala',      ext: '.scala',      style: 'c'},
-  {lang: 'swift',      ext: '.swift',      style: 'c'}
+  {lang: 'swift',      ext: '.swift',      style: 'c'},
+  {lang: 'typescript', ext: '.ts',         style: 'c'}
 ];
 
 const h = {};
diff --git a/test/test_helper.js b/test/test_helper.js
index 18a2979d..7f2efabc 100644
--- a/test/test_helper.js
+++ b/test/test_helper.js
@@ -135,7 +135,7 @@ describe('helper', function() {
       assert.equal(h.langToExt('rust'), '.rs');
       assert.equal(h.langToExt('scala'), '.scala');
       assert.equal(h.langToExt('swift'), '.swift');
-      assert.equal(h.langToExt('rust'), '.rs');
+      assert.equal(h.langToExt('typescript'), '.ts');
     });
   }); // #langToExt
 
@@ -150,14 +150,15 @@ describe('helper', function() {
       assert.equal(h.extToLang('~/leetcode/../file.sql'), 'mysql');
       assert.equal(h.extToLang('~/leetcode/hello.php'), 'php');
       assert.equal(h.extToLang('c:/file.js'), 'javascript');
+      assert.equal(h.extToLang('~/leetcode/../file.sql'), 'mysql');
+      assert.equal(h.extToLang('~/leetcode/hello.php'), 'php');
       assert.equal(h.extToLang('c:/Users/skygragon/file.py'), 'python');
       assert.equal(h.extToLang('~/file.rb'), 'ruby');
       assert.equal(h.extToLang('~/leetcode/file.rs'), 'rust');
       assert.equal(h.extToLang('/tmp/file.scala'), 'scala');
       assert.equal(h.extToLang('~/leetcode/file.swift'), 'swift');
-      assert.equal(h.extToLang('~/leetcode/../file.sql'), 'mysql');
+      // typescript also allowed
       assert.equal(h.extToLang('/home/skygragon/file.dat'), 'unknown');
-      assert.equal(h.extToLang('~/leetcode/file.rs'), 'rust');
     });
   }); // #extToLang
 
@@ -180,6 +181,7 @@ describe('helper', function() {
       assert.deepEqual(h.langToCommentStyle('python'), RUBY_STYLE);
       assert.deepEqual(h.langToCommentStyle('python3'), RUBY_STYLE);
       assert.deepEqual(h.langToCommentStyle('ruby'), RUBY_STYLE);
+      assert.deepEqual(h.langToCommentStyle('rust'), C_STYLE);
       assert.deepEqual(h.langToCommentStyle('scala'), C_STYLE);
       assert.deepEqual(h.langToCommentStyle('swift'), C_STYLE);
     });