diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e75196b..f49d10f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,7 +14,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: Swatinem/rust-cache@v2
       - uses: rui314/setup-mold@v1
       - name: Set up NASM
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index b1654ec..a39c1b2 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -4,7 +4,7 @@ jobs:
   clippy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Install clippy
         uses: dtolnay/rust-toolchain@stable
         with: