diff --git a/README.md b/README.md
index 461471b..6114372 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ FROM ghcr.io/nmfs-opensci/container-images/py-rocket-base:latest
 # If needed to do a root install of software
 USER root
 COPY app.sh app.sh
-RUN chmod xxxxx && ./app.sh && rm app.sh
+RUN chmod +x app.sh && ./app.sh && rm app.sh
 USER ${NB_USER}
 
 # install R packages