diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
index 66def04bf..125cd2487 100644
--- a/.github/workflows/coverage.yaml
+++ b/.github/workflows/coverage.yaml
@@ -36,7 +36,7 @@ jobs:
 
       - id: setup
         name: Setup Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@nightly
         with:
           toolchain: nightly
           components: llvm-tools-preview