diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 58764df6..e62ca96e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     container:
       image: golang:1.26.5
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
@@ -84,7 +84,7 @@ jobs:
           - {goos: windows, goarch: amd64}
           - {goos: windows, goarch: arm64}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
index e9b2f5a0..687b59b1 100644
--- a/.github/workflows/deploy-pages.yml
+++ b/.github/workflows/deploy-pages.yml
@@ -23,7 +23,7 @@ jobs:
     container:
       image: node:24
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
@@ -42,7 +42,7 @@ jobs:
           cp -r pages/dist/* _site/
           cp pages/logo.svg _site/logo.svg
 
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/upload-pages-artifact@v5
         with:
           path: _site
 
@@ -58,4 +58,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5
diff --git a/.github/workflows/ocr-review.yml b/.github/workflows/ocr-review.yml
index 1bb87752..4a6c55e2 100644
--- a/.github/workflows/ocr-review.yml
+++ b/.github/workflows/ocr-review.yml
@@ -45,7 +45,7 @@ jobs:
       # pull_request_target this checks out the trusted base branch; the
       # composite action performs its own full checkout (fetch-depth: 0) later.
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
diff --git a/.github/workflows/pages-ci.yml b/.github/workflows/pages-ci.yml
index 7bdb6853..bdc19ad5 100644
--- a/.github/workflows/pages-ci.yml
+++ b/.github/workflows/pages-ci.yml
@@ -20,7 +20,7 @@ jobs:
     container:
       image: node:24
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7d921d18..b27a34be 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -29,7 +29,7 @@ jobs:
           - goos: windows
             goarch: arm64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
@@ -51,7 +51,7 @@ jobs:
           go build -ldflags "${LD_FLAGS}" -o "${BIN_NAME}" ./cmd/opencodereview
           echo "bin_name=${BIN_NAME}" >> $GITHUB_ENV
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: binary-${{ matrix.goos }}-${{ matrix.goarch }}
           path: ${{ env.bin_name }}
@@ -70,7 +70,7 @@ jobs:
       - name: Install git
         run: apt-get update && apt-get install -y git
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
 
@@ -135,7 +135,7 @@ jobs:
             echo "RELEASE_NOTES_EOF"
           } >> "$GITHUB_OUTPUT"
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v8
         with:
           pattern: binary-*
           merge-multiple: true
@@ -144,7 +144,7 @@ jobs:
         run: sha256sum opencodereview-* | sort > sha256sum.txt
 
       - name: Create GitHub Release
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
         with:
           body: ${{ steps.notes.outputs.body }}
           files: |
@@ -152,7 +152,7 @@ jobs:
             sha256sum.txt
 
       - name: Attest release artifacts
-        uses: actions/attest-build-provenance@v2
+        uses: actions/attest-build-provenance@v4
         with:
           subject-path: |
             opencodereview-*
@@ -167,7 +167,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
@@ -175,7 +175,7 @@ jobs:
       - name: Install jq
         run: apt-get update && apt-get install -y jq
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v8
         with:
           pattern: binary-*
           merge-multiple: true
diff --git a/.github/workflows/translation-sync.yml b/.github/workflows/translation-sync.yml
index 343e55f0..556fb3a6 100644
--- a/.github/workflows/translation-sync.yml
+++ b/.github/workflows/translation-sync.yml
@@ -23,7 +23,7 @@ jobs:
       image: node:24.18.0
     steps:
       # fetch-depth: 0 so the non-blocking docs check can diff base...head.
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/vscode-ext.yml b/.github/workflows/vscode-ext.yml
index 419c2d5b..4533a4f0 100644
--- a/.github/workflows/vscode-ext.yml
+++ b/.github/workflows/vscode-ext.yml
@@ -23,14 +23,14 @@ jobs:
       run:
         working-directory: extensions/vscode
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Trust workspace
         run: git config --global --replace-all safe.directory '*'
         working-directory: .
 
       - name: Cache Yarn packages
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/yarn
           key: ${{ runner.os }}-yarn-${{ hashFiles('extensions/vscode/yarn.lock') }}
diff --git a/action.yml b/action.yml
index 203b2e22..93e6d83a 100644
--- a/action.yml
+++ b/action.yml
@@ -160,7 +160,7 @@ runs:
 
     - name: Setup Node.js
       if: steps.check_deps.outputs.node_installed != 'true'
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: ${{ inputs.node_version }}
 
@@ -180,7 +180,7 @@ runs:
         echo "PR head sha: $HEAD_SHA"
 
     - name: Checkout base
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
       with:
         # Checkout the trusted base, not the PR head. OCR reviews the
         # base-to-head diff from git objects; the head commit's blobs are
@@ -254,7 +254,7 @@ runs:
 
     - name: Upload review artifacts
       if: ${{ always() && inputs.upload_artifacts == 'true' }}
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       with:
         name: ocr-review-result-${{ github.run_id }}-${{ github.run_attempt }}
         path: |
@@ -272,7 +272,7 @@ runs:
     - name: Post review comments
       if: env.OCR_EXIT_CODE == '0'
       id: post
-      uses: actions/github-script@v7
+      uses: actions/github-script@v9
       env:
         OCR_INCREMENTAL_OVERLAP_THRESHOLD: ${{ inputs.incremental_overlap_threshold }}
       with: