diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 00c6f6fd..f22bedc8 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -41,5 +41,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.66.1
+      - uses: dtolnay/rust-toolchain@1.70.0
       - run: cargo check