diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index c8c7ba0d5..2068278cf 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -58,10 +58,10 @@ jobs:
       - name: checkout ${{ github.head_ref }}
         uses: actions/checkout@v4
 
-      - name: Install Rust (nightly-2024-09-10)
+      - name: Install Rust (${{ vars.RUST_VERSION_API_DIFF }})
         uses: actions-rust-lang/setup-rust-toolchain@v1.10.0
         with:
-          toolchain: nightly-2024-09-10
+          toolchain: ${{ vars.RUST_VERSION_API_DIFF }}
 
       - name: Install cargo-public-api
         uses: taiki-e/cache-cargo-install-action@v2.0.1