diff --git a/crates/rbuilder/src/live_builder/cli.rs b/crates/rbuilder/src/live_builder/cli.rs
index 8547cd8f..aa30060e 100644
--- a/crates/rbuilder/src/live_builder/cli.rs
+++ b/crates/rbuilder/src/live_builder/cli.rs
@@ -29,7 +29,7 @@ enum Cli {
 
 #[derive(Parser, Debug)]
 struct RunCmd {
-    #[clap(help = "Config file path")]
+    #[clap(env = "RBUILDER_CONFIG", help = "Config file path")]
     config: PathBuf,
 }