1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ra_project_model/src/cargo_workspace.rs b/crates/ra_project_model/src/cargo_workspace.rs
index 2b06e9e37..712d8818f 100644
--- a/crates/ra_project_model/src/cargo_workspace.rs
+++ b/crates/ra_project_model/src/cargo_workspace.rs
@@ -167,7 +167,7 @@ impl CargoWorkspace {
         Ok(CargoWorkspace { packages, targets, workspace_root: meta.workspace_root })
     }
 
-    pub fn packages<'a>(&'a self) -> impl Iterator<Item = Package> + 'a {
+    pub fn packages<'a>(&'a self) -> impl Iterator<Item = Package> + ExactSizeIterator + 'a {
         self.packages.iter().map(|(id, _pkg)| id)
     }