diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 7347c9f..208709c 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -15,11 +15,11 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout
-        uses: actions/checkout@v7.0.1
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
       - name: Set up Node.js
-        uses: actions/setup-node@v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 24
       # Unpinned on purpose: validate against the schema the hosted app runs.