diff --git a/web/server/.env.example b/web/server/.env.example
index 2d29ca3..77d1a14 100644
--- a/web/server/.env.example
+++ b/web/server/.env.example
@@ -6,3 +6,6 @@ GROQ_API_KEY=your_groq_api_key_here
 
 # Server port (optional, defaults to 5000)
 PORT=5000
+
+# Python bin (for venv); optional
+PYTHON_BIN=/path/to/bin/python