diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4191015..304924d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,9 +13,9 @@ jobs:
         cc: [gcc, clang]
     steps:
     - name: Check out code
-      uses: actions/checkout@v3
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: Set up JDK ${{ matrix.jdk }}
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@8df1039502a15bceb9433410b1a100fbe190c53b # v4.5.0
       with:
         distribution: 'zulu'
         java-version: ${{ matrix.jdk }}