diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 4186cd8..d5bd745 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -14,9 +14,9 @@ jobs:
       matrix:
         node-version: [20.x, 22.x, 24.x]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
       with:
         node-version: ${{ matrix.node-version }}
     - name: Install log