diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 782d674..e32d5f0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,11 +9,11 @@ jobs:
       matrix:
         node-version: [16.x, 18.x]
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      - uses: actions/setup-node@7c12f8017d5436eb855f1ed4399f037a36fbd9e8 # v2
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/cache@v2
+      - uses: actions/cache@8492260343ad570701412c2f464a5877dc76bace # v2
         with:
           path: node_modules
           key: ${{ runner.os }}-modules-${{ hashFiles('yarn.lock') }}