diff --git a/rust/extractor/src/rust_analyzer.rs b/rust/extractor/src/rust_analyzer.rs
index 4c8a76639954a..7d2b78b4c55e6 100644
--- a/rust/extractor/src/rust_analyzer.rs
+++ b/rust/extractor/src/rust_analyzer.rs
@@ -120,7 +120,9 @@ fn find_project_manifests(
         .iter()
         .map(|path| AbsPathBuf::assert_utf8(current.join(path)))
         .collect();
-    let ret = ra_ap_project_model::ProjectManifest::discover_all(&abs_files);
+    let mut ret = ra_ap_project_model::ProjectManifest::discover_all(&abs_files);
+    ret.sort();
+    ret.dedup();
     info!(
         "found manifests: {}",
         ret.iter().map(|m| format!("{m}")).join(", ")