diff --git a/examples/hello_world_until/Cargo.toml b/examples/hello_world_until/Cargo.toml
index 54dee46e..dd2f2792 100644
--- a/examples/hello_world_until/Cargo.toml
+++ b/examples/hello_world_until/Cargo.toml
@@ -12,4 +12,4 @@ futures-util = "0.3.14"
 tokio = { version = "1.11.0", features = ["full"] }
 
 [target.'cfg(unix)'.dev-dependencies]
-nix = "0.26"
+nix = { version = "0.27", features = ["process", "signal"] }