diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 599a3301..aab779af 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,14 +22,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [24]
+        node: [24, 26]
     name: Node ${{ matrix.node }}
     steps:
-      - uses: actions/checkout@v6
+      # https://github.com/actions/checkout/tree/v6.0.3
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10
         with:
           ref: ${{ github.event.inputs.ref || github.ref }}
       - name: Setup Node ${{ matrix.node }}
-        uses: actions/setup-node@v6
+        # https://github.com/actions/setup-node/tree/v6.3.0
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f
         with:
           node-version: ${{ matrix.node }}
       - run: npm install --ignore-scripts