diff --git a/.github/workflows/opam-dependency-submission.yml b/.github/workflows/opam-dependency-submission.yml
index 629d7e3..f067172 100644
--- a/.github/workflows/opam-dependency-submission.yml
+++ b/.github/workflows/opam-dependency-submission.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout tree
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v3
         with:
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index baff35f..2e07324 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout tree
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v3
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout tree
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v3
         with:
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout tree
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v3
         with: