diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000000..6cc00712d1
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,8 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/add-to-project.yml b/.github/workflows/add-to-project.yml
index ffbbfda314..ffed987f79 100644
--- a/.github/workflows/add-to-project.yml
+++ b/.github/workflows/add-to-project.yml
@@ -13,7 +13,7 @@ jobs:
     name: Add issue to project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/add-to-project@main
+      - uses: actions/add-to-project@cbad230d1debaae844a2c6f675327ab6c537e0f1 # main
         with:
           project-url: https://github.com/orgs/github/projects/8014
           github-token: ${{ secrets.REST_PUBLIC_ADD_TO_PROJECT_TOKEN }}
diff --git a/.github/workflows/auto-merge-openapi-updates.yml b/.github/workflows/auto-merge-openapi-updates.yml
index b3f3649b2f..6e83a33a63 100644
--- a/.github/workflows/auto-merge-openapi-updates.yml
+++ b/.github/workflows/auto-merge-openapi-updates.yml
@@ -73,7 +73,7 @@ jobs:
       detail: ${{ steps.merge.outputs.detail }}
     steps:
       - name: Checkout workflow scripts
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           # Pinned to the default branch on purpose. A `workflow_dispatch` run
           # can be started from any ref, and without this the write-enabled job
@@ -86,7 +86,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.12'
 
@@ -245,7 +245,7 @@ jobs:
 
       - name: Checkout repository (blobless)
         if: steps.checks.outputs.status == 'green' && steps.freeze.outputs.status == 'clear'
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           # Pinned like the tools checkout so the comparison baseline is
           # provably the default branch, whatever ref a manual run was started
diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index 3676fd8f61..64e37c68a1 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -21,8 +21,8 @@ jobs:
             files: 'descriptions-next/**/*.yaml'
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         name: Install Python
         with:
           python-version: '3.12'
@@ -31,7 +31,7 @@ jobs:
       - run: yamllint -f parsable -c .yamllint-config.yml ${{matrix.files}}
         name: Run yamllint on ${{matrix.version}} descriptions
       - name: Install NodeJS
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: '16'
       - name: Install Node modules
@@ -40,7 +40,7 @@ jobs:
       - name: JSON Lint
         run: npm run lint
       - name: OpenAPI Lint
-        uses: mattpage/redocly-cli-lint-action@v0.0.1
+        uses: mattpage/redocly-cli-lint-action@63f131fbfd009e0e32d01ccae6dbfbed3706ad88 # v0.0.1
         with:
           # TODO: use matrix.files variable when workflow is ready to process 3.1 files
           entrypoints: 'descriptions/**/*.yaml'
diff --git a/.github/workflows/release-notifier.yml b/.github/workflows/release-notifier.yml
index 7d826afb90..d3211bd458 100644
--- a/.github/workflows/release-notifier.yml
+++ b/.github/workflows/release-notifier.yml
@@ -9,7 +9,7 @@ jobs:
   notify:
     runs-on: ubuntu-latest
     steps:
-      - uses: gr2m/release-notifier-action@v1
+      - uses: gr2m/release-notifier-action@914377cb876747d1ee435f7ba20bdf42bcda2316 # v1
         with:
           # https://github.com/apps/openapi-release-notifier
           app_id: ${{ secrets.OPENAPI_RELEASE_NOTIFIER_APP_ID }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b623fd130c..4a2221a41f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,13 +14,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
       - name: Build project # This would actually build your project, using zip for an example artifact
         run: |
           zip descriptions descriptions/**/*
       - name: Create Release
         id: create_release
-        uses: actions/create-release@v1
+        uses: actions/create-release@0cb9c9b65d5d1901c1f53e5e66eaf4afd303e70e # v1.1.4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
@@ -30,7 +30,7 @@ jobs:
           prerelease: false
       - name: Upload Release Asset
         id: upload-release-asset
-        uses: actions/upload-release-asset@v1
+        uses: actions/upload-release-asset@e8f9f06c4b078e705bd2ea027f0926603fc9b4d5 # v1.0.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
diff --git a/.github/workflows/scripts-tests.yml b/.github/workflows/scripts-tests.yml
index c52b1b2e4f..b8761e8ccd 100644
--- a/.github/workflows/scripts-tests.yml
+++ b/.github/workflows/scripts-tests.yml
@@ -20,8 +20,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         name: Install Python
         with:
           python-version: '3.12'