diff --git a/README.md b/README.md
index ce771fc..0ee3e78 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,12 @@ AVR-gcc and stuff like that
 sudo apt install -y gcc-avr avrdude avr-libc make cmake
 ```
 
+You also have to add yourself to the dialout group.
+
+```
+sudo usermod -aG dialout <username>
+```
+
 ## CMAKE instructions ##
 
 You have to specify a custom toolchain when you run cmake for the first time. Example: