diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 796ec3d..6c331bd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4
+      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f  # v6.3.0
         with:
           node-version: 20
       - name: Install and build
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 5281e14..a324664 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -32,7 +32,7 @@ jobs:
         run: |
           pip install -e ".[dev]" pytest pytest-asyncio
           pytest tests/ -v -m "not slow"
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4
+      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f  # v6.3.0
         with:
           node-version: 22
       - name: JavaScript tests
@@ -81,7 +81,7 @@ jobs:
       id-token: write  # OIDC trusted publishing + provenance — no NPM_TOKEN needed
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4
+      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f  # v6.3.0
         with:
           node-version: 22
           registry-url: 'https://registry.npmjs.org'