diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 00f0ef8..35f4374 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v6.4.0
         with:
           node-version: 26
           cache: npm
diff --git a/.github/workflows/ingest.yml b/.github/workflows/ingest.yml
index c523831..c982d6a 100644
--- a/.github/workflows/ingest.yml
+++ b/.github/workflows/ingest.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v6.4.0
         with:
           node-version: 26
       - run: node scripts/fetch-github-projects.mjs