diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 000000000..da58a776f
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,29 @@
+# The workflows pin actions to a moving major tag, which only advances
+# when someone goes looking. Dependabot opens the pull request instead,
+# so a new major is a decision to take rather than a discovery to make.
+
+version: 2
+
+updates:
+  - package-ecosystem: "github-actions"
+    # For Actions this is the documented value rather than a literal
+    # path: Dependabot searches `.github/workflows` and a root
+    # `action.yml`.
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    commit-message:
+      # Dependabot appends the colon, giving `CI: bump ...`, which is
+      # the subject convention for infrastructure changes here.
+      prefix: "CI"
+    groups:
+      # Minor and patch updates need no migration, so they travel
+      # together. Major updates deliberately match no group: each one
+      # gets its own pull request, and can be reviewed, held back or
+      # reverted without disturbing the others.
+      actions-minor-and-patch:
+        patterns:
+          - "*"
+        update-types:
+          - "minor"
+          - "patch"
diff --git a/.github/workflows/code-projects-type-check.yml b/.github/workflows/code-projects-type-check.yml
index b9ad71d21..515b98a85 100644
--- a/.github/workflows/code-projects-type-check.yml
+++ b/.github/workflows/code-projects-type-check.yml
@@ -20,9 +20,9 @@ jobs:
         python-version: ['3.14']
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install pyright
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index b06f6996a..4f1c18566 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -28,11 +28,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@v4
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -43,7 +43,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v3
+      uses: github/codeql-action/autobuild@v4
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -57,4 +57,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@v4
diff --git a/.github/workflows/eslint.js.yml b/.github/workflows/eslint.js.yml
index 417044d17..4ed59644a 100644
--- a/.github/workflows/eslint.js.yml
+++ b/.github/workflows/eslint.js.yml
@@ -22,11 +22,11 @@ jobs:
         node-version: [24.x]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Enable Corepack
       run: corepack enable
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'
diff --git a/.github/workflows/publish-learn-latest.yml b/.github/workflows/publish-learn-latest.yml
index 893b871a0..1ac8b2e7b 100644
--- a/.github/workflows/publish-learn-latest.yml
+++ b/.github/workflows/publish-learn-latest.yml
@@ -28,7 +28,7 @@ jobs:
         echo "content_run_id=$content_run_id" >> $GITHUB_OUTPUT
 
     - name: Download HTML artifact
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v8
       with:
         name: learn-html
         path: unzipped_html
@@ -36,7 +36,7 @@ jobs:
         github-token: ${{ secrets.LEARN_READ_TOKEN }}
 
     - name: Download PDF books artifact
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v8
       with:
         name: learn-pdf-books
         path: unzipped_pdf_books
@@ -44,7 +44,7 @@ jobs:
         github-token: ${{ secrets.LEARN_READ_TOKEN }}
 
     - name: Download EPUB books artifact
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v8
       with:
         name: learn-epub-books
         path: unzipped_epub_books
@@ -52,7 +52,7 @@ jobs:
         github-token: ${{ secrets.LEARN_READ_TOKEN }}
 
     - name: Checkout learn-latest-html-pages
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
       with:
         repository: AdaCore/learn-latest-html-pages
         ref: gh-pages
diff --git a/.github/workflows/sphinx-books-tests.js.yml b/.github/workflows/sphinx-books-tests.js.yml
index a6839388b..8c443efb7 100644
--- a/.github/workflows/sphinx-books-tests.js.yml
+++ b/.github/workflows/sphinx-books-tests.js.yml
@@ -17,16 +17,16 @@ jobs:
         node-version: [24.x]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Enable Corepack
       run: corepack enable
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'
@@ -71,7 +71,7 @@ jobs:
     - name: Build PDF books including build/runtime output
       run: make HIDDEN_BOOKS="" HIDDEN_CONTENTS="" pdf_books
     - name: Archive PDF books in artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       with:
         name: learn-pdf-books
         path: |
@@ -82,7 +82,7 @@ jobs:
     - name: Build EPUB books including build/runtime output
       run: make HIDDEN_BOOKS="" HIDDEN_CONTENTS="" epub_books
     - name: Archive EPUB books in artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       with:
         name: learn-epub-books
         path: |
diff --git a/.github/workflows/sphinx-content-tests.js.yml b/.github/workflows/sphinx-content-tests.js.yml
index b39f64d6d..840ace68a 100644
--- a/.github/workflows/sphinx-content-tests.js.yml
+++ b/.github/workflows/sphinx-content-tests.js.yml
@@ -17,16 +17,16 @@ jobs:
         node-version: [24.x]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Enable Corepack
       run: corepack enable
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'
@@ -57,7 +57,7 @@ jobs:
     - name: Build HTML content
       run: make HIDDEN_BOOKS="" HIDDEN_CONTENTS="" cleanall webpack-production sphinx-production
     - name: Archive HTML content in artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       with:
         name: learn-html
         path: |
diff --git a/.github/workflows/sphinx-plugin-tests.js.yml b/.github/workflows/sphinx-plugin-tests.js.yml
index e9bda4912..ca4cc9cb1 100644
--- a/.github/workflows/sphinx-plugin-tests.js.yml
+++ b/.github/workflows/sphinx-plugin-tests.js.yml
@@ -23,9 +23,9 @@ jobs:
         python-version: ['3.14']
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install OS Deps
diff --git a/.github/workflows/typescript-tests.js.yml b/.github/workflows/typescript-tests.js.yml
index ba9d738a9..7491ae772 100644
--- a/.github/workflows/typescript-tests.js.yml
+++ b/.github/workflows/typescript-tests.js.yml
@@ -24,16 +24,16 @@ jobs:
         node-version: [24.x]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Enable Corepack
       run: corepack enable
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'
diff --git a/.github/workflows/vagrantfile-validation.yml b/.github/workflows/vagrantfile-validation.yml
index f40051fa5..e419316f1 100644
--- a/.github/workflows/vagrantfile-validation.yml
+++ b/.github/workflows/vagrantfile-validation.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-26.04
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
 
     - name: Check Ruby syntax
       run: ruby -c Vagrantfile
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-26.04
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
 
     # Ubuntu's archive carries no `vagrant` package, so the release is
     # fetched from HashiCorp and pinned, the way the box version is.