diff --git a/README.md b/README.md
index 09dd265..03f5c26 100644
--- a/README.md
+++ b/README.md
@@ -2,5 +2,5 @@ How to run:
 
 ```
 docker image build --quiet --tag runall-image .
-docker container run --tty --rm --read-only runall-image
+docker container run --tty --rm --read-only --memory=6m runall-image
 ```