diff --git a/.github/workflows/audits.yml b/.github/workflows/audits.yml
index ab19a3dc4..87e5f5e94 100644
--- a/.github/workflows/audits.yml
+++ b/.github/workflows/audits.yml
@@ -10,7 +10,7 @@ jobs:
     name: Vet Rust dependencies
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
         id: toolchain
       - run: rustup override set ${{steps.toolchain.outputs.name}}
diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index fac308c59..0b174ae3f 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -13,7 +13,7 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v1
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index a39d54a59..c8bcb04b2 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -13,12 +13,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the base branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Check out the PR branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 0
diff --git a/.github/workflows/lints.yml b/.github/workflows/lints.yml
index 71ca24dc6..35fb399b7 100644
--- a/.github/workflows/lints.yml
+++ b/.github/workflows/lints.yml
@@ -8,7 +8,7 @@ jobs:
     name: Scripted diffs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           ref: ${{ github.event.pull_request.head.sha }}
@@ -19,7 +19,7 @@ jobs:
     name: General
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: sudo python3 -m pip install yq
 
@@ -62,7 +62,7 @@ jobs:
     name: Python
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: sudo python3 -m pip install pyflakes
 
@@ -78,7 +78,7 @@ jobs:
     name: Clippy (MSRV)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run clippy
         uses: actions-rs/clippy-check@v1
         with:
@@ -90,5 +90,5 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: cargo fmt -- --check