diff --git a/readme.md b/readme.md
index f4b4cab..d55ee81 100644
--- a/readme.md
+++ b/readme.md
@@ -35,9 +35,14 @@ When text mode is enabled (default by `config.ini.example`), text diff of news i
 To disable text mode, set `textmode` in `[global]` of `config.ini` to `false`.
 
 ## run
-Use screen or something to keep session.
-
 ```
 source keiojp-scraper/venv/activate.fish
 python3 ./scrape.py
 ```
+
+## run regularly
+Use crontab.
+Designate python3 under venv.
+```
+10 9,17 * * * /path/to/python3 /path/to/repo/scrape.py
+```
diff --git a/requirements.txt b/requirements.txt
index d1c0d8d..038a3f1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,5 @@ chromedriver-binary==83.0.4103.39.0
 configparser==5.0.0
 idna==2.9
 requests==2.23.0
-schedule==0.6.0
 selenium==3.141.0
 urllib3==1.25.9
diff --git a/scrape.py b/scrape.py
index 4fc2455..ae2f8d4 100644
--- a/scrape.py
+++ b/scrape.py
@@ -7,7 +7,6 @@
 import chromedriver_binary
 import os
 import requests
-import schedule
 import copy
 import re
 import json
@@ -191,7 +190,4 @@ def main():
         os.remove(pngFile)
 
 
-schedule.every().hour.at(':10').do(main)
-while True:
-    schedule.run_pending()
-    time.sleep(1)
+main()