diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1b5050a6..18928db6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
           - rust: "1.65" # MSRV
             flags: "--all-features"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - name: Install test binaries
         shell: bash
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: taiki-e/install-action@cargo-hack
       - uses: Swatinem/rust-cache@v2
@@ -62,7 +62,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@clippy
       - uses: Swatinem/rust-cache@v2
       - name: clippy
@@ -75,7 +75,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rust-docs
@@ -90,7 +90,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
diff --git a/.github/workflows/deps.yml b/.github/workflows/deps.yml
index 1f711c8a..7951e14e 100644
--- a/.github/workflows/deps.yml
+++ b/.github/workflows/deps.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: EmbarkStudios/cargo-deny-action@v1
         with:
           command: check all
diff --git a/.github/workflows/sanity.yml b/.github/workflows/sanity.yml
index 837c8ec9..a666a2f8 100644
--- a/.github/workflows/sanity.yml
+++ b/.github/workflows/sanity.yml
@@ -16,7 +16,7 @@ jobs:
     name: unused dependencies
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@nightly