diff --git a/README.md b/README.md
index 7c46d30..3f2b493 100644
--- a/README.md
+++ b/README.md
@@ -388,6 +388,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 | `ERE_IMAGE_REGISTRY`             | Specifies docker image registry of the images. When specified, it will try to pull image from the registry and possibly skip building.  | ``      |
 | `ERE_FORCE_REBUILD_DOCKER_IMAGE` | Force to rebuild docker images locally even they exist, it also prevents pulling image from registry.                                   | `false` |
 | `ERE_GPU_DEVICES`                | Specifies which GPU devices to use when running Docker containers for GPU-enabled zkVMs. The value is passed to Docker's `--gpus` flag. | `all`   |
+| `ERE_DOCKER_NETWORK`             | Specifies the Docker network being used (if any) so spawned `ere-server-*` containers will join that network.                           | ``      |
 
 Example usage: