diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 93be61f..189c337 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: ⏬ Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 2212a50..dc140cd 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -61,7 +61,7 @@ jobs:
 
     steps:
       - name: ⏬ Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: 🔽 Install dotnet
         uses: actions/setup-dotnet@v3