diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 83b4dbb..8a197fc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -85,7 +85,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Install Rust
-      run: rustup update stable
+      run: rustup update ${{ matrix.rust }}
     - name: Install cross
       uses: taiki-e/install-action@cross
     - name: Add rust-src