diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 411b5af..d428c47 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -19,7 +19,7 @@ jobs:
       TAG: ${{ github.sha }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       # Install the cosign tool except on PR
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
diff --git a/.github/workflows/dotnet-docker.yml b/.github/workflows/dotnet-docker.yml
index b6549bb..50b5eaf 100644
--- a/.github/workflows/dotnet-docker.yml
+++ b/.github/workflows/dotnet-docker.yml
@@ -16,7 +16,7 @@ jobs:
         TAG: ${{ github.sha }}
   
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions/setup-dotnet@v4
         with:
diff --git a/.github/workflows/marp-pages.yml b/.github/workflows/marp-pages.yml
index 7774324..f1a1d58 100644
--- a/.github/workflows/marp-pages.yml
+++ b/.github/workflows/marp-pages.yml
@@ -32,7 +32,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Copy images
         run: mkdir build && cp -R slides/img build/img && cp -R slides/themes build/themes