diff --git a/app-proto/sketch-outline/src/main.rs b/app-proto/sketch-outline/src/main.rs
index b86f979..0466724 100644
--- a/app-proto/sketch-outline/src/main.rs
+++ b/app-proto/sketch-outline/src/main.rs
@@ -4,7 +4,6 @@ mod outline;
 
 use nalgebra::DVector;
 use rustc_hash::FxHashSet;
-use slab::Slab;
 use sycamore::prelude::*;
 
 use assembly::{Assembly, Constraint, Element};