diff --git a/.github/workflows/dh-code.yml b/.github/workflows/dh-code.yml
index c8739f7..319bfb3 100644
--- a/.github/workflows/dh-code.yml
+++ b/.github/workflows/dh-code.yml
@@ -16,7 +16,7 @@ jobs:
         run: apt-get update && apt-get install -y git curl tar libgomp1
 
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Verify DH initiator in Go using Gobra
         run: |
diff --git a/.github/workflows/model.yml b/.github/workflows/model.yml
index ff4b321..2b0c7a0 100644
--- a/.github/workflows/model.yml
+++ b/.github/workflows/model.yml
@@ -17,7 +17,7 @@ jobs:
           echo "IMAGE_ID=ghcr.io/$REPO_OWNER/protocol-verification-refinement-tamarin" >> $GITHUB_ENV
 
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Image version
         run: |
diff --git a/.github/workflows/wireguard-code.yml b/.github/workflows/wireguard-code.yml
index 13adb0a..abb68f1 100644
--- a/.github/workflows/wireguard-code.yml
+++ b/.github/workflows/wireguard-code.yml
@@ -17,7 +17,7 @@ jobs:
           echo "IMAGE_ID=ghcr.io/$REPO_OWNER/protocol-verification-refinement-wireguard" >> $GITHUB_ENV
 
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Image version
         run: |