diff --git a/hack/scripts/README.md b/hack/scripts/README.md
index 05eaa307..87acbf27 100644
--- a/hack/scripts/README.md
+++ b/hack/scripts/README.md
@@ -17,9 +17,17 @@ Installation:
 # if you have not
 wget https://raw.githubusercontent.com/weaveworks/flintlock/main/hack/scripts/provision.sh
 chmod +x provision.sh
+
 ./provision.sh --help
 ```
 
+To override component versions (default: `latest`):
+```bash
+export FLINTLOCK=
+export FIRECRACKER=
+export CONTAINERD=
+```
+
 Available commands:
 ```
 usage: ./hack/scripts/provision.sh <COMMAND> <OPTIONS>