diff --git a/README.md b/README.md
index c97fd9a..bcbbc6e 100644
--- a/README.md
+++ b/README.md
@@ -1,109 +1,40 @@
 # Miteru
 
 [![Gem Version](https://badge.fury.io/rb/miteru.svg)](https://badge.fury.io/rb/miteru)
-[![Build Status](https://travis-ci.com/ninoseki/miteru.svg?branch=master)](https://travis-ci.com/ninoseki/miteru)
-[![Docker Cloud Build Status](https://img.shields.io/docker/cloud/build/ninoseki/miteru)](https://hub.docker.com/repository/docker/ninoseki/miteru)
+[![Ruby CI](https://github.com/ninoseki/miteru/actions/workflows/test.yml/badge.svg)](https://github.com/ninoseki/miteru/actions/workflows/test.yml)
 [![CodeFactor](https://www.codefactor.io/repository/github/ninoseki/miteru/badge)](https://www.codefactor.io/repository/github/ninoseki/miteru)
 [![Coverage Status](https://coveralls.io/repos/github/ninoseki/miteru/badge.svg?branch=master)](https://coveralls.io/github/ninoseki/miteru?branch=master)
 
 Miteru is an experimental phishing kit detection tool.
 
+## Disclaimer
+
+This tool is for research purposes only. The use of this tool is your responsibility.
+I take no responsibility and/or liability for how you choose to use this tool.
+
 ## How it works
 
 - It collects phishy URLs from the following feeds:
-  - [CertStream-Suspicious feed via urlscan.io](https://urlscan.io/search/#certstream-suspicious)
-  - [OpenPhish feed via urlscan.io](https://urlscan.io/search/#OpenPhish)
-  - [PhishTank feed via urlscan.io](https://urlscan.io/search/#PhishTank)
-  - [URLhaus feed via urlscan.io](https://urlscan.io/search/#URLHaus)
+  - [CertStream-Suspicious feed via urlscan.io](https://urlscan.io/search/#task.source%3Acertstream-suspicious)
+  - [OpenPhish feed via urlscan.io](https://urlscan.io/search/#task.source%3Aopenphish)
+  - [PhishTank feed via urlscan.io](https://urlscan.io/search/#task.source%3Aphishtank)
+  - [URLhaus feed via urlscan.io](https://urlscan.io/search/#task.source%3Aurlhaus)
   - urlscan.io phish feed (available for Pro users)
   - [Ayashige feed](https://github.com/ninoseki/ayashige)
   - [Phishing Database feed](https://github.com/mitchellkrogza/Phishing.Database)
   - [PhishStats feed](https://phishstats.info/)
 - It checks each phishy URL whether it enables directory listing and contains a phishing kit (compressed file) or not.
-  - Note: compressed file = `*.zip`, `*.rar`, `*.7z`, `*.tar` and `*.gz`.
+  - Note: Supported compressed files are: `*.zip`, `*.rar`, `*.7z`, `*.tar` and `*.gz`.
 
 ## Features
 
-- [x] Phishing kit detection & collection.
-- [x] Slack notification.
-- [x] Threading.
-
-## Installation
-
-```bash
-gem install miteru
-```
-
-## Usage
-
-```bash
-$ miteru
-Commands:
-  miteru execute         # Execute the crawler
-  miteru help [COMMAND]  # Describe available commands or one specific command
-```
-
-```bash
-$ miteru help execute
-Usage:
-  miteru execute
-
-Options:
-  [--auto-download], [--no-auto-download]              # Enable or disable auto-download of phishing kits
-  [--ayashige], [--no-ayashige]                        # Enable or disable ayashige(ninoseki/ayashige) feed
-  [--directory-traveling], [--no-directory-traveling]  # Enable or disable directory traveling
-  [--download-to=DOWNLOAD_TO]                          # Directory to download file(s)
-                                                       # Default: /tmp
-  [--post-to-slack], [--no-post-to-slack]              # Post a message to Slack if it detects a phishing kit
-  [--size=N]                                           # Number of urlscan.io's results. (Max: 10,000)
-                                                       # Default: 100
-  [--threads=N]                                        # Number of threads to use
-  [--verbose], [--no-verbose]
-                                                       # Default: true
-
-Execute the crawler
-```
-
-```bash
-$ miteru execute
-...
-https://dummy1.com: it doesn't contain a phishing kit.
-https://dummy2.com: it doesn't contain a phishing kit.
-https://dummy3.com: it doesn't contain a phishing kit.
-https://dummy4.com: it might contain a phishing kit (dummy.zip).
-```
-
-## Using Docker (alternative if you don't install Ruby)
-
-```bash
-$ docker pull ninoseki/miteru
-# ex. auto-download detected phishing kit(s) into host machines's /tmp directory
-$ docker run --rm -v /tmp:/tmp ninoseki/miteru execute --auto-download
-```
-
-## Configuration
-
-For using `--post-to-slack` feature, you should set the following environment variables:
-
-- `SLACK_WEBHOOK_URL`: Your Slack Webhook URL.
-- `SLACK_CHANNEL`: Slack channel to post a message (default: "#general").
-
-If you are a urlscan.io Pro user, set your API key as an environment variable `URLSCAN_API_KEY`.
-
-It enables you to subscribe the urlscan.io phish feed.
-
-## Examples
-
-### Aasciinema cast
-
-[![asciicast](https://asciinema.org/a/hHpkHhMLiiv17gmdRhVMtZWwM.svg)](https://asciinema.org/a/hHpkHhMLiiv17gmdRhVMtZWwM)
-
-### Slack notification
-
-![img](./screenshots/slack.png)
+- [x] Phishing kit detection & collection
+- [x] Slack notification
+- [x] Threading
 
-## Alternatives
+## Docs
 
-- [t4d/StalkPhish](https://github.com/t4d/StalkPhish): The Phishing kits stalker, harvesting phishing kits for investigations.
-- [duo-labs/phish-collect](https://github.com/duo-labs/phish-collect): Python script to hunt phishing kits.
-- [leunammejii/analyst_arsenal](https://github.com/leunammejii/analyst_arsenal): A tool belt for analysts to continue fighting the good fight.
+- [Requirements & Installation](https://github.com/ninoseki/miteru/wiki/Requirements-&-Installation)
+- [Usage](https://github.com/ninoseki/miteru/wiki/Usage)
+- [Configuration](https://github.com/ninoseki/miteru/wiki/Configuration)
+- [Alternatives](https://github.com/ninoseki/miteru/wiki/Alternatives)