diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cb5f8ac..0374235 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,6 +44,11 @@ jobs:
         if: matrix.rust == 'nightly'
       - run: cargo bench --no-run
         if: matrix.rust == 'nightly'
+      - uses: actions/upload-artifact@v4
+        if: matrix.rust == 'nightly' && always()
+        with:
+          name: Cargo.lock
+          path: Cargo.lock
 
   doc:
     name: Documentation