diff --git a/NamcoBnsfTool/README.md b/NamcoBnsfTool/README.md
index a4fd337..85f5e8e 100644
--- a/NamcoBnsfTool/README.md
+++ b/NamcoBnsfTool/README.md
@@ -3,4 +3,8 @@
 Very very simple python tool to easily create IS14 encoded Namco BNSF files.  
 Audio is encoded at 48000hz and output as a mono channel file.  
 
-Usage: python bnsf.py input_audio output_bnsf  
\ No newline at end of file
+Prerequisites:
+Python 3.12.3 or newer  
+pydub installed through pip `pip install pydub`  
+
+Usage: python bnsf.py input_audio output_bnsf