diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 40d45fdb0..42bfa1c62 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -28,6 +28,7 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@master
+      - uses: actions-rs/toolchain@v1
       - name: Set up the Windows environment
         run: |
           choco install llvm
@@ -64,6 +65,7 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@master
+      - uses: actions-rs/toolchain@v1
       - name: Set up the Windows environment
         run: |
           choco install llvm
diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 000000000..2bf5ad044
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+stable