diff --git a/tools/addprons.py b/tools/addprons.py
deleted file mode 100755
index b8b9bf9..0000000
--- a/tools/addprons.py
+++ /dev/null
@@ -1,78 +0,0 @@
-#!/usr/bin/env python3.8
-# -*- coding: UTF-8 -*-
-"""
-Add American English pronunciations and reformat the word list
-Usage: addprons.py <input_word_file> <output_word_file>
-"""
-import sys
-import os
-import re
-import urllib.request
-from bs4 import BeautifulSoup
-
-
-def main():
-    if len(sys.argv) != 3:
-        print(__doc__)
-        sys.exit(1)
-    input_file = sys.argv[1]
-    output_file = sys.argv[2]
-
-    if not os.path.isfile(input_file):
-        print("error: {} does not exist".format(input_file))
-        sys.exit(1)
-
-    if os.path.isfile(output_file):
-        print("{} exists. Override (y/n)?".format(output_file))
-        reply = input().strip().lower()
-        if reply[0] != 'y':
-            sys.exit(1)
-
-    # Add American Pronounciations to the word list one by one
-    with open(input_file, 'r') as in_fp, open(output_file, 'w') as out_fp:
-        for line in in_fp:
-            line = line.rstrip()
-            if re.search(r"\| 单词", line):
-                line = "| 单词 | 正确发音（英音）| 正确发音（美音）| 错误发音 |"
-            elif re.search(r"\| ----", line):
-                line = "| ---- | --------------- | ----------------- | ----------- | "
-            elif re.search(r'✅', line):
-                word = " "
-                britsh_pron = " "
-                american_pron = " "
-                print(line)
-                fields = re.split(r'\|', line)
-                print(fields[1])
-                match = re.findall(r'[\w\-\s]+', fields[1])
-                if match:
-                    word = match[0]
-                britsh = re.findall(r'\[🔊\]\(http.*\)', fields[1])
-                print(britsh)
-                if britsh:
-                    britsh_pron = britsh[0]
-                    american_pron = britsh_pron.replace("type=1", "type=2")
-                britsh_pron = britsh_pron + fields[2]
-                american_pron = american_pron + "✅ " + get_phonetics(word, 2)
-                line = '|' + word + '|' + britsh_pron + '|' + american_pron + ' | ' + fields[3] + '|'
-            out_fp.write(line + '\n')
-            #print(line)
-    in_fp.close()
-    out_fp.close()
-
-def get_phonetics(word, option): 
-    word = word.strip()
-    url = "http://dict.youdao.com/w/eng/"+word
-    try:
-        response = urllib.request.urlopen(url).read()
-    except urllib.error.URLError:
-        return ""
-    soup = BeautifulSoup(response, "html.parser")
-    spans = soup.find_all('span', {'class' : 'pronounce'})
-    lines = [span.get_text() for span in spans]
-    match = re.findall(r'\[.+\]', lines[option - 1])
-    if match:
-        return match[0]
-    return ""
-
-if __name__ == '__main__':
-    main()