diff --git a/.github/workflows/rust_ci.yaml b/.github/workflows/rust_ci.yaml
index 0cdc62e..9debb4d 100644
--- a/.github/workflows/rust_ci.yaml
+++ b/.github/workflows/rust_ci.yaml
@@ -101,7 +101,7 @@ jobs:
       - name: Install cargo-machete
         run: cargo +nightly install cargo-machete
       - name: Install Rust stable toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@nightly
       - uses: Swatinem/rust-cache@v2
         with:
           cache-on-failure: true