diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0347d20..ff6ec2e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
         with: { fetch-depth: 0 } # Pinned historical codec differential oracle.
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: ${{ matrix.node }}
           cache: npm
@@ -62,7 +62,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
         with: { fetch-depth: 0 } # Pinned historical codec differential oracle.
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with: { node-version: 24, cache: npm }
       - run: npm ci --ignore-scripts
       - name: Full deterministic nonactuating software mission
@@ -81,7 +81,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v7
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with: { node-version: 24, cache: npm }
       - run: npm ci --ignore-scripts
       - name: Audit locked dependency graph
@@ -99,7 +99,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with: { node-version: 20, cache: npm }
       - run: npm ci
       - name: Typecheck + build
@@ -122,7 +122,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v7
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with: { node-version: 24, cache: npm }
       - run: npm ci
       - name: Assert ruvector backends are NOT installed
diff --git a/.github/workflows/dream-nightly.yml b/.github/workflows/dream-nightly.yml
index 77bff48..bdf987e 100644
--- a/.github/workflows/dream-nightly.yml
+++ b/.github/workflows/dream-nightly.yml
@@ -41,7 +41,7 @@ jobs:
       - uses: actions/checkout@v7
         with:
           fetch-depth: 0
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with: { node-version: 24, cache: npm }
       - run: npm ci
       - run: npm run build
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c8fa757..976021f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: 24
           registry-url: https://registry.npmjs.org