diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index cecd0eb..2cfa87c 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -145,8 +145,6 @@ jobs:
 
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@v1
-        with:
-          toolchain: master
         with:
           toolchain: stable