diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index cd60f4f3..1d5ac4f8 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout tree
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@0499de31b99561a6d14a36a5f662c2a54f91beee # v3.29.5
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index a4f644bf..8d47a9e8 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout tree
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Dependency Review
         uses: actions/dependency-review-action@40c09b7dc99638e5ddb0bfd91c1673effc064d8a # v4.8.1
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 94ff2a42..0a09f957 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout tree
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Set-up Mise
         uses: jdx/mise-action@be3be2260bc02bc3fbf94c5e2fed8b7964baf074 # v3.4.0
       - run: yarn install --immutable
@@ -51,7 +51,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout tree
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Set-up OCaml ${{ matrix.ocaml-compiler }}
         uses: ./
         with:
@@ -67,7 +67,7 @@ jobs:
       image: archlinux:latest
     steps:
       - name: Checkout tree
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Install dependencies
         run: pacman -Sy --noconfirm bash bubblewrap ca-certificates coreutils curl diffutils gcc git make nano ncurses patch rsync sudo tar unzip xz
       - name: Set-up OCaml