diff --git a/src/bin/rpython/makefile b/src/bin/rpython/makefile
index 74df0db..00cb4f3 100644
--- a/src/bin/rpython/makefile
+++ b/src/bin/rpython/makefile
@@ -1,2 +1,5 @@
+requires: python3.6+
+requires: pip3
+
 run:
     pip install -r requirements.txt