diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d45f2c7..9fbac47 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -28,6 +28,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
+      - name: Install nightly toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
       - name: run tests
         run: cargo test --workspace --all-targets
       - name: run doctests