diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd93afc..9c64d1d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -140,7 +140,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: stable
+          toolchain: 1.50.0
           target: x86_64-unknown-linux-gnu
           override: true
       - name: Rust Cache