diff --git a/README.md b/README.md
index a80fdee..3c5c034 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,8 @@ c65gm compiles high-level source code into ACME assembler syntax for the 6502 pr
 ## Requirements
 
 - **Go**: Version 1.25.1 or higher (tested with 1.25.5)
+- **Acme**: Tested with release 0.97 ("Zem")
+
 
 The project uses Go modules with these dependencies:
 - `github.com/armon/go-radix` - Prefix tree for command lookup