diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ead3df1..d067b16 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,7 +16,7 @@ jobs:
       - name: Install Rust toolchain
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: nightly
+          toolchain: nightly-2023-10-15
           profile: minimal
           override: true
 
@@ -38,7 +38,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           components: clippy, rustfmt
-          toolchain: nightly-2022-01-28
+          toolchain: nightly-2023-10-15
           profile: minimal
           override: true