diff --git a/crates/uv/src/commands/python/list.rs b/crates/uv/src/commands/python/list.rs
index 794ab1bd1..ee949ad63 100644
--- a/crates/uv/src/commands/python/list.rs
+++ b/crates/uv/src/commands/python/list.rs
@@ -78,6 +78,8 @@ pub(crate) async fn list(
             PythonListKinds::Installed => None,
             PythonListKinds::Downloads => Some(if all_platforms {
                 base_download_request
+            } else if all_arches {
+                base_download_request.fill_platform()?.with_any_arch()
             } else {
                 base_download_request.fill_platform()?
             }),