diff --git a/src/command/build.rs b/src/command/build.rs
index 465165d45..c6545a3c9 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -124,7 +124,7 @@ pub struct BuildOptions {
 
     #[structopt(last = true)]
     /// List of extra options to pass to `cargo build`
-    extra_options: Vec<String>,
+    pub extra_options: Vec<String>,
 }
 
 impl Default for BuildOptions {