diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f6a4db82a..14dd47323 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,8 +22,8 @@ jobs:
     name: uv workspace (lock + sync + import smoke)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
-      - uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           version: "0.11.x"
       - name: Verify uv lockfile and workspace sync
@@ -41,12 +41,12 @@ jobs:
     name: Build (cmake + uv sync --extra megakernel)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           submodules: recursive
           token: ${{ secrets.SUBMODULE_PAT || secrets.GITHUB_TOKEN }}
 
-      - uses: Jimver/cuda-toolkit@3d45d157f327c09c04b50ee6ccdea2d9d017ec76 # v0.2.35
+      - uses: Jimver/cuda-toolkit@b8bf9c6c28f8a92fbb04dcfcaee872e60c57462d # v0.2.36
         with:
           # Keep the existing upstream CUDA toolkit version; the uv workspace
           # only replaces Python environment setup.
@@ -66,7 +66,7 @@ jobs:
             echo "LD_LIBRARY_PATH=$RUNNER_TEMP/cuda-stubs:/usr/local/cuda-12.8/targets/x86_64-linux/lib/stubs:/usr/local/cuda-12.8/lib64"
           } >> "$GITHUB_ENV"
 
-      - uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
+      - uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           version: "0.11.x"
           # uv reads .python-version (3.12, matching the previous CI) and downloads the matching
@@ -180,7 +180,7 @@ jobs:
       group: ${{ matrix.concurrency_group }}
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           submodules: recursive
           token: ${{ secrets.SUBMODULE_PAT || secrets.GITHUB_TOKEN }}
@@ -289,7 +289,7 @@ jobs:
       group: lucebox3-${{ matrix.concurrency_key }}-runner
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: KFD health (diagnose instead of hanging)
         # rocminfo on a wedged KFD blocks in uninterruptible sleep and eats
@@ -362,18 +362,18 @@ jobs:
     runs-on: windows-2022
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           submodules: recursive
           token: ${{ secrets.SUBMODULE_PAT || secrets.GITHUB_TOKEN }}
 
       - name: Set up MSVC Developer Command Prompt
-        uses: ilammy/msvc-dev-cmd@a102174a2b586eec2ea151a69e6fd14404a8ce7c # v1.13.0
+        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0
         with:
           arch: x64
 
       - name: Set up CUDA Toolkit 12.8
-        uses: Jimver/cuda-toolkit@3d45d157f327c09c04b50ee6ccdea2d9d017ec76 # v0.2.35
+        uses: Jimver/cuda-toolkit@b8bf9c6c28f8a92fbb04dcfcaee872e60c57462d # v0.2.36
         with:
           cuda: '12.8.0'
           method: network
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 1cc0df3bb..936d737e0 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -112,20 +112,20 @@ jobs:
           large-packages: false   # slow; preinstalled apt packages we don't need
           swap-storage: true
 
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           # Submodule contents are needed by the cmake build (llama.cpp ggml
           # subtree, mit-han-lab Block-Sparse-Attention). The Dockerfile
           # asserts they're present before running cmake.
           submodules: recursive
 
-      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
+      - uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
 
       - name: Log in to GHCR
         # Skip on PR runs: we never push from a PR and the token from a fork
         # PR can't `packages:write` anyway.
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -144,7 +144,7 @@ jobs:
 
       - name: Derive image metadata
         id: meta
-        uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6
+        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302 # v6
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           # Suffix every tag with the variant so future CUDA stacks can
@@ -173,7 +173,7 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
 
       - name: Build and push
-        uses: docker/bake-action@6614cfa25eff9a0b2b2697efb0b6159e7680d584 # v7.2.0
+        uses: docker/bake-action@d3418bd7d0e9324001bca92fa8ba175ea7e6dc9b # v7.3.0
         env:
           # Wire identity into docker-bake.hcl's GIT_SHA / IMAGE_TAG /
           # BUILD_TIME variables. IMAGE_TAG is `${{ steps.meta.outputs.
diff --git a/.github/workflows/speed-profile.yml b/.github/workflows/speed-profile.yml
index a9c958d9a..89a87770e 100644
--- a/.github/workflows/speed-profile.yml
+++ b/.github/workflows/speed-profile.yml
@@ -46,7 +46,7 @@ jobs:
       TOKENIZER: ${{ vars.LUCEBOX_TOKENIZER || vars.LUCEBOX_SPEED_PROFILE_TOKENIZER || 'Qwen/Qwen3.6-27B' }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
           token: ${{ secrets.SUBMODULE_PAT || secrets.GITHUB_TOKEN }}
@@ -205,7 +205,7 @@ jobs:
 
       - name: Upload artifacts (json + markdown + nsys trace)
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: speed-profile-${{ github.run_id }}
           path: |