diff --git a/.github/workflows/lints.yml b/.github/workflows/lints.yml
index 50d66e0..d1fb086 100644
--- a/.github/workflows/lints.yml
+++ b/.github/workflows/lints.yml
@@ -8,7 +8,7 @@ jobs:
     name: Clippy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Clippy check
         uses: auguwu/clippy-action@1.2.2
         with:
@@ -20,7 +20,7 @@ jobs:
     name: Intra-doc links
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: cargo fetch
       # Requires #![deny(rustdoc::broken_intra_doc_links)] in crates.
       - name: Check intra-doc links
@@ -30,7 +30,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Check formatting
         run: cargo fmt --all --check
 
@@ -38,7 +38,7 @@ jobs:
     name: hacspec syntax
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@main
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Install hax
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 27b915f..dee30ec 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: cargo fetch
       - name: Build tests
         run: cargo build --workspace --verbose --all-features --tests