diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 91c42308..c397ee63 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.73.0
         with:
           components: rustfmt, clippy
       - uses: Swatinem/rust-cache@v1