diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index fa3bf1a..f6bafb9 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: Setup LXD
         uses: canonical/setup-lxd@v0.1.1
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 0e83f3b..9c7b7c4 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: Log in to the Container registry
         uses: docker/login-action@cf8514a65188af1d4f94f8c28a7a4153af1088ce