diff --git a/README.md b/README.md
index 1045df0..7c6c352 100644
--- a/README.md
+++ b/README.md
@@ -2,18 +2,19 @@
 
 This project is a Debian repository hosted on GitHub Pages.
 
-## Supported Distributions
+** Supported Distributions **
 
 - Debian Buster
 - Debian Bullseye/Sid
 - Ubuntu 20.04 (Focal Fossa)
 - Ubuntu 20.10 (Groovy Gorilla)
 
-## Configuration
 
-### Official Repository
+FastGit Mirror [![fastgit.org](https://img.shields.io/badge/powered--by-fastgit.org-blue)](https://fastgit.org/)
 
-NOTE: Replace `$YOUR_DISTRIBUTION` with your distribution code (`stable`/`unstable`/`focal`/`groovy`...) below.
+## Debian Configuration
+
+### Add Qv2ray public keys to your system: 
 
 ```bash
 # Install some prerequisites needed by adding GPG public keys
@@ -22,33 +23,77 @@ $ sudo apt-get install gnupg ca-certificates curl
 # Import our GPG key. Notice the hyphen at the end of line.
 $ curl -sSL https://qv2ray.net/debian/pubkey.gpg | sudo apt-key add -
 
-# Add the our official APT repository:
-$ echo "deb [arch=amd64] https://qv2ray.net/debian/ $YOUR_DISTRIBUTION main" | sudo tee /etc/apt/sources.list.d/qv2ray.list
+# you can also import GPG public keys by using FastGit:
+# $ curl -sSL https://raw.fastgit.org/Qv2ray/debian/master/pubkey.gpg | sudo apt-key add -
+```
+
+### Add the our official APT repository:
+
+```bash
+$ echo "deb [arch=amd64] https://qv2ray.net/debian/ stable main" | sudo tee /etc/apt/sources.list.d/qv2ray.list
+# If you are using unstable version Debian, you should use this command instead: 
+# $ echo "deb [arch=amd64] https://qv2ray.net/debian/ unstable main" | sudo tee /etc/apt/sources.list.d/qv2ray.list
 
 # To update the APT index:
-$ sudo apt-get update
+$ sudo apt update
 
 # You can install Qv2ray from APT now:
-$ sudo apt-get install qv2ray
+$ sudo apt install qv2ray
 ```
 
 ### FastGit Mirror (in case `qv2ray.github.io` is blocked)
 
-[![fastgit.org](https://img.shields.io/badge/powered--by-fastgit.org-blue)](https://fastgit.org/)
+```bash
 
-NOTE: Replace `$YOUR_DISTRIBUTION` with your distribution code (`stable`/`unstable`/`focal`/`groovy`...) below.
+# Add the our official APT repository:
+$ echo "deb [arch=amd64] https://raw.fastgit.org/Qv2ray/debian/master/ stable main" | sudo tee /etc/apt/sources.list.d/qv2ray-fastgit.list
+# If you are using unstable version Debian, you should use this command instead: 
+# $ echo "deb [arch=amd64] https://raw.fastgit.org/Qv2ray/debian/master/ unstable main" | sudo tee /etc/apt/sources.list.d/qv2ray-fastgit.list
+
+# To update the APT index:
+$ sudo apt update
+
+# You can install Qv2ray from APT now:
+$ sudo apt install qv2ray
+```
+
+## Ubuntu Configuration
+
+### Add Qv2ray public keys to your system: 
 
 ```bash
 # Install some prerequisites needed by adding GPG public keys
-$ sudo apt-get install gnupg ca-certificates curl
+$ sudo apt install curl gnupg2 ca-certificates lsb-release
 
 # Import our GPG key. Notice the hyphen at the end of line.
-$ curl -sSL https://raw.fastgit.org/Qv2ray/debian/master/pubkey.gpg | sudo apt-key add -
+$ curl -sSL https://qv2ray.net/debian/pubkey.gpg | sudo apt-key add -
+
+# you can also import GPG public keys by using FastGit:
+# $ curl -sSL https://raw.fastgit.org/Qv2ray/debian/master/pubkey.gpg | sudo apt-key add -
+```
+
+### Add the our official APT repository:
+
+```bash
+$ echo "deb [arch=amd64] https://qv2ray.net/debian/ `lsb_releases -cs` main" | sudo tee /etc/apt/sources.list.d/qv2ray.list
+
+# To update the APT index:
+$ sudo apt update
+
+# You can install Qv2ray from APT now:
+$ sudo apt install qv2ray
+```
+
+### FastGit Mirror (in case `qv2ray.github.io` is blocked)
+
+```bash
 
 # Add the our official APT repository:
-$ echo "deb [arch=amd64] https://raw.fastgit.org/Qv2ray/debian/master/ $YOUR_DISTRIBUTION main" | sudo tee /etc/apt/sources.list.d/qv2ray-fastgit.list
-$ sudo apt-get update
+$ echo "deb [arch=amd64] https://raw.fastgit.org/Qv2ray/debian/master/ `lsb_release` main" | sudo tee /etc/apt/sources.list.d/qv2ray-fastgit.list
+
+# To update the APT index:
+$ sudo apt update
 
 # You can install Qv2ray from APT now:
-$ sudo apt-get install qv2ray
+$ sudo apt install qv2ray
 ```