diff --git a/README.md b/README.md
index 9dea6f0..d4951a3 100644
--- a/README.md
+++ b/README.md
@@ -159,6 +159,7 @@ To change the config file format, set the following environment variables:
 
 * `DSNET_OUTPUT=vyatta`
 * `DSNET_OUTPUT=wg-quick`
+* `DSNET_OUTPUT=nixos`
 
 Example vyatta output: