diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 73252c2..c13c6a6 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -20,8 +20,8 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       - name: result files, vault and leaderboard are consistent
@@ -35,11 +35,11 @@ jobs:
     runs-on: ubuntu-latest
     needs: validate
     steps:
-      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
-      - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+      - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.cache/huggingface
           key: hf-e5base-mmarco-v1
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 95927b2..bc60b61 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -29,8 +29,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       - name: Build sdist and wheel
@@ -47,7 +47,7 @@ jobs:
           for cmd in sgm-index sgm-ask sgm-mcp sgm-turnstate-hook sgm-turnstate-show sqlite-graph-memory; do
             test -x "/tmp/clean/bin/$cmd" || { echo "::error::$cmd missing from wheel"; exit 1; }
           done
-      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+      - uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: dist
           path: dist/
@@ -59,7 +59,7 @@ jobs:
     permissions:
       id-token: write   # the whole point: OIDC instead of a stored token
     steps:
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+      - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
         with:
           name: dist
           path: dist/
@@ -79,7 +79,7 @@ jobs:
       id-token: write
       contents: read
     steps:
-      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: server.json must describe the version being released
         run: |
           pkg=$(python3 -c "import tomllib;print(tomllib.load(open('pyproject.toml','rb'))['project']['version'])")
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3d2ab3f..a76acd2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -21,8 +21,8 @@ jobs:
         # runs on daily. A floor nobody runs is a promise, not a fact.
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
-      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: ${{ matrix.python-version }}
       - name: install
@@ -47,8 +47,8 @@ jobs:
     # else in it and checks that the four commands actually start.
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       - name: build the distributions