diff --git a/crates/gpui2/src/assets.rs b/crates/gpui2/src/assets.rs
index baf75b8aabc8acea0d93d0cc1346344dab580459..39c8562b69703a959fcbd3ad75bc8a6601b0a839 100644
--- a/crates/gpui2/src/assets.rs
+++ b/crates/gpui2/src/assets.rs
@@ -8,7 +8,7 @@ use std::{
     sync::atomic::{AtomicUsize, Ordering::SeqCst},
 };
 
-pub trait AssetSource: 'static {
+pub trait AssetSource: 'static + Send + Sync {
     fn load(&self, path: &str) -> Result<Cow<[u8]>>;
     fn list(&self, path: &str) -> Result<Vec<SharedString>>;
 }