diff --git a/README.md b/README.md
index 05d7a68..36710f1 100644
--- a/README.md
+++ b/README.md
@@ -9,5 +9,5 @@ $ docker build -t my-user/mono-builder cedar-14/.
 To build and upload new Mono version:
 
 ```term
-$ docker run -v ${PWD}/cache:/var/cache -e VERSION=4.0.1 -e STACK=cedar-14 my-user/mono-builder
+$ docker run -v ${PWD}/cache:/var/cache -e VERSION=4.0.1 my-user/mono-builder
 ```