diff --git a/README.md b/README.md
index 804c379..a4225fd 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,15 @@ sudo zypper in systray-x-minimal
 
 Installing the repository:
 
+###### 21.04
+
+```bash
+wget -q https://download.opensuse.org/repositories/home:/Ximi1970/xUbuntu_21.04/Release.key
+sudo mv -f  Release.key  /etc/apt/trusted.gpg.d/Systray-x.Ximi1970.asc
+sudo bash -c 'echo "deb https://download.opensuse.org/repositories/home:/Ximi1970:/Mozilla:/Add-ons/xUbuntu_21.04 ./" > /etc/apt/sources.list.d/systray-x.list'
+sudo apt update
+```
+
 ###### 20.10
 
 ```bash
@@ -165,12 +174,16 @@ Installing the SysTray-X addon and companion app package:
 
 ###### KDE
 
+Please select the `Plasma (X11)` session when loging in on 21.04. The `Plasma (Wayland)` session will not work.
+
 ```bash
 sudo apt install systray-x
 ```
 
 ###### GNOME
 
+Please select the `Ubuntu on Xorg` session when loging in on 21.04. The `Ubuntu` (Wayland) session will not work.
+
 ```bash
 sudo apt install systray-x-gnome
 ```
@@ -251,6 +264,13 @@ sudo dnf config-manager --add-repo https://download.opensuse.org/repositories/ho
 sudo dnf update --refresh
 ```
 
+###### 34
+
+```bash
+sudo dnf config-manager --add-repo https://download.opensuse.org/repositories/home:/Ximi1970:/Mozilla:/Add-ons/Fedora_34/home:Ximi1970:Mozilla:Add-ons.repo
+sudo dnf update --refresh
+```
+
 ###### 33
 
 ```bash