diff --git a/README.md b/README.md
index a758090..57e0fab 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,10 @@ This command will retrieve the given package manager from the specified archive
 
 ## Environment Variables
 
+- `COREPACK_ENABLE_NETWORK` can be set to `0` to prevent Corepack from accessing the network (in which case you'll be responsible for hydrating the package manager versions that will be required for the projects you'll run, using `corepack hydrate`).
+
+- `COREPACK_HOME` can be set in order to define where Corepack should install the package managers. By default it is set to `$HOME/.node/corepack`.
+
 - `COREPACK_ROOT` has no functional impact on Corepack itself; it's automatically being set in your environment by Corepack when it shells out to the underlying package managers, so that they can feature-detect its presence (useful for commands like `yarn init`).
 
 ## Contributing