diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1759094..690c654a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,10 +17,11 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: stable
+          toolchain: 1.71.1
           components: rustfmt
       - uses: actions-rs/cargo@v1
         with:
+          toolchain: 1.71.1
           command: fmt
           args: --all -- --check