diff --git a/crates/project_model/src/lib.rs b/crates/project_model/src/lib.rs
index 1d408dff2ea..cdefee804ba 100644
--- a/crates/project_model/src/lib.rs
+++ b/crates/project_model/src/lib.rs
@@ -119,7 +119,7 @@ fn find_cargo_toml_in_child_dir(entities: ReadDir) -> Vec<AbsPathBuf> {
         }
     }
 
-    pub fn discover_all(paths: &[impl AsRef<AbsPath>]) -> Vec<ProjectManifest> {
+    pub fn discover_all(paths: &[AbsPathBuf]) -> Vec<ProjectManifest> {
         let mut res = paths
             .iter()
             .filter_map(|it| ProjectManifest::discover(it.as_ref()).ok())