diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f3662d3..b966220 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Install dependencies
       run: |
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 87f6fe7..f8ecc00 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2023-01-21"
+channel = "nightly-2023-09-07"
 components = ["rust-src"]