diff --git a/src/main.rs b/src/main.rs
index 8736208..203450f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -37,6 +37,7 @@ fn main() {
             Arg::with_name("host")
                 .short("h")
                 .long("host")
+                .env("HOST")
                 .required(true)
                 .takes_value(true),
         )
@@ -44,6 +45,7 @@ fn main() {
             Arg::with_name("port")
                 .short("p")
                 .long("port")
+                .env("PORT")
                 .takes_value(true)
                 .default_value("1883"),
         )
@@ -51,6 +53,7 @@ fn main() {
             Arg::with_name("lifx-secret")
                 .short("s")
                 .long("lifx-secret")
+                .env("LIFX_SECRET")
                 .required(true)
                 .takes_value(true),
         )