diff --git a/docs/installation.md b/docs/installation.md
index d05cb621..de62f8b9 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -1,5 +1,7 @@
 # Installation
 
+`haiku.rag` need Python version 3.12 or newer.
+
 ## Basic Installation
 
 ```bash