diff --git a/crates/red_knot_workspace/src/workspace/metadata.rs b/crates/red_knot_workspace/src/workspace/metadata.rs
index 7321c62dee..a8ce01790a 100644
--- a/crates/red_knot_workspace/src/workspace/metadata.rs
+++ b/crates/red_knot_workspace/src/workspace/metadata.rs
@@ -349,6 +349,8 @@ fn collect_packages(
         packages.push(package);
     }
 
+    packages.sort_unstable_by(|a, b| a.root().cmp(b.root()));
+
     Ok(CollectedPackagesOrStandalone::Packages(packages))
 }