diff --git a/README.md b/README.md
index 4f18b1c..223af79 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ devices by looking at the image using e.g. Ghidra.
 ## Compiling
 Install the following particular build requisites (Debian 12, should work on Ubuntu)
 ```
-sudo apt install sdcc xxd python
+sudo apt install sdcc xxd python-is-python3 libjson-c-dev
 ```
 
 Now, building the firmware image should work: