diff --git a/.github/actions/setup-javascript/action.yml b/.github/actions/setup-javascript/action.yml
index 0c7ead1c15f..7982c17d618 100644
--- a/.github/actions/setup-javascript/action.yml
+++ b/.github/actions/setup-javascript/action.yml
@@ -9,7 +9,7 @@ runs:
   using: 'composite'
   steps:
     - name: Set up Node.js
-      uses: actions/setup-node@v6
+      uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
       with:
         node-version-file: '.nvmrc'
 
@@ -23,7 +23,7 @@ runs:
       shell: bash
       run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
 
-    - uses: actions/cache@v4
+    - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
       id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
       with:
         path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
diff --git a/.github/actions/setup-ruby/action.yml b/.github/actions/setup-ruby/action.yml
index 3e232f134c9..0085aa875cb 100644
--- a/.github/actions/setup-ruby/action.yml
+++ b/.github/actions/setup-ruby/action.yml
@@ -17,7 +17,7 @@ runs:
         sudo apt-get install -y libicu-dev libidn11-dev libvips42 ${{ inputs.additional-system-dependencies }}
 
     - name: Set up Ruby
-      uses: ruby/setup-ruby@v1
+      uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1
       with:
         ruby-version: ${{ inputs.ruby-version }}
         bundler-cache: true
diff --git a/.github/renovate.json5 b/.github/renovate.json5
index 678a256b748..ddca0bc239c 100644
--- a/.github/renovate.json5
+++ b/.github/renovate.json5
@@ -113,6 +113,7 @@
       ],
       matchUpdateTypes: ['major'],
       groupName: 'artifact actions (major)',
+      extends: ['helpers:pinGitHubActionDigests'],
     },
     {
       // Update @types/* packages every week, with one grouped PR
diff --git a/.github/workflows/build-container-image.yml b/.github/workflows/build-container-image.yml
index 84b729df434..07669a574c0 100644
--- a/.github/workflows/build-container-image.yml
+++ b/.github/workflows/build-container-image.yml
@@ -35,7 +35,7 @@ jobs:
           - linux/arm64
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Prepare
         env:
@@ -47,19 +47,19 @@ jobs:
           image_names=${PUSH_TO_IMAGES//$'\n'/,}
           echo "IMAGE_NAMES=${image_names%,}" >> $GITHUB_ENV
 
-      - uses: docker/setup-buildx-action@v3
+      - uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
         id: buildx
 
       - name: Log in to Docker Hub
         if: contains(inputs.push_to_images, 'tootsuite')
-        uses: docker/login-action@v3
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Log in to the GitHub Container registry
         if: contains(inputs.push_to_images, 'ghcr.io')
-        uses: docker/login-action@v3
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -67,7 +67,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
         if: ${{ inputs.push_to_images != '' }}
         with:
           images: ${{ inputs.push_to_images }}
@@ -76,7 +76,7 @@ jobs:
 
       - name: Build and push by digest
         id: build
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6
         with:
           context: .
           file: ${{ inputs.file_to_build }}
@@ -100,7 +100,7 @@ jobs:
 
       - name: Upload digest
         if: ${{ inputs.push_to_images != '' }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         with:
           # `hashFiles` is used to disambiguate between streaming and non-streaming images
           name: digests-${{ hashFiles(inputs.file_to_build) }}-${{ env.PLATFORM_PAIR }}
@@ -119,10 +119,10 @@ jobs:
       PUSH_TO_IMAGES: ${{ inputs.push_to_images }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Download digests
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6
         with:
           path: ${{ runner.temp }}/digests
           # `hashFiles` is used to disambiguate between streaming and non-streaming images
@@ -131,25 +131,25 @@ jobs:
 
       - name: Log in to Docker Hub
         if: contains(inputs.push_to_images, 'tootsuite')
-        uses: docker/login-action@v3
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Log in to the GitHub Container registry
         if: contains(inputs.push_to_images, 'ghcr.io')
-        uses: docker/login-action@v3
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
         if: ${{ inputs.push_to_images != '' }}
         with:
           images: ${{ inputs.push_to_images }}
diff --git a/.github/workflows/build-push-pr.yml b/.github/workflows/build-push-pr.yml
index f6ff6521753..c8878873c28 100644
--- a/.github/workflows/build-push-pr.yml
+++ b/.github/workflows/build-push-pr.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       # Repository needs to be cloned so `git rev-parse` below works
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
       - id: version_vars
         run: |
           echo mastodon_version_metadata=pr-${{ github.event.pull_request.number }}-$(git rev-parse --short ${{github.event.pull_request.head.sha}}) >> $GITHUB_OUTPUT
diff --git a/.github/workflows/build-releases.yml b/.github/workflows/build-releases.yml
index d2136a2de76..3307fe97fad 100644
--- a/.github/workflows/build-releases.yml
+++ b/.github/workflows/build-releases.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
       # Repository needs to be cloned to list branches
       - name: Clone repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/bundler-audit.yml b/.github/workflows/bundler-audit.yml
index 9cc49a7f797..c9ceb8fcab5 100644
--- a/.github/workflows/bundler-audit.yml
+++ b/.github/workflows/bundler-audit.yml
@@ -28,10 +28,10 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1
         with:
           bundler-cache: true
 
diff --git a/.github/workflows/bundlesize-compare.yml b/.github/workflows/bundlesize-compare.yml
index ab6d91f0b0a..1651f5cdae6 100644
--- a/.github/workflows/bundlesize-compare.yml
+++ b/.github/workflows/bundlesize-compare.yml
@@ -17,7 +17,7 @@ jobs:
     env:
       ANALYZE_BUNDLE_SIZE: '1'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Javascript environment
         uses: ./.github/actions/setup-javascript
@@ -26,7 +26,7 @@ jobs:
         run: yarn run build:production
 
       - name: Upload stats.json
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         with:
           name: head-stats
           path: ./stats.json
@@ -40,7 +40,7 @@ jobs:
     env:
       ANALYZE_BUNDLE_SIZE: '1'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
         with:
           ref: ${{ github.base_ref }}
 
@@ -51,7 +51,7 @@ jobs:
         run: yarn run build:production
 
       - name: Upload stats.json
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         with:
           name: base-stats
           path: ./stats.json
@@ -64,9 +64,9 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5
 
-      - uses: twk3/rollup-size-compare-action@v1.0.0
+      - uses: twk3/rollup-size-compare-action@5d3e409fcfe15d8ebb0edfe87e772c04b287f660 # v1.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           current-stats-json-path: ./head-stats/stats.json
diff --git a/.github/workflows/check-i18n.yml b/.github/workflows/check-i18n.yml
index 9d500ffc44e..9ba0ddf3f7e 100644
--- a/.github/workflows/check-i18n.yml
+++ b/.github/workflows/check-i18n.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Ruby environment
         uses: ./.github/actions/setup-ruby
diff --git a/.github/workflows/chromatic.yml b/.github/workflows/chromatic.yml
index 634c2701865..411f5ef02d3 100644
--- a/.github/workflows/chromatic.yml
+++ b/.github/workflows/chromatic.yml
@@ -16,11 +16,11 @@ jobs:
       changed: ${{ steps.filter.outputs.src }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
         with:
           fetch-depth: 0
 
-      - uses: dorny/paths-filter@v3
+      - uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3
         id: filter
         with:
           filters: |
@@ -42,7 +42,7 @@ jobs:
     if: github.repository == 'mastodon/mastodon' && needs.pathcheck.outputs.changed == 'true'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
         with:
           fetch-depth: 0
 
@@ -53,7 +53,7 @@ jobs:
         run: yarn build-storybook
 
       - name: Run Chromatic
-        uses: chromaui/action@v13
+        uses: chromaui/action@07791f8243f4cb2698bf4d00426baf4b2d1cb7e0 # v13
         with:
           projectToken: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}
           zip: true
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index cf038ae4809..9f538d07875 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -31,11 +31,11 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v4
+        uses: github/codeql-action/init@45cbd0c69e560cd9e7cd7f8c32362050c9b7ded2 # v4
         with:
           languages: ${{ matrix.language }}
           # If you wish to specify custom queries, you can do so here or in a config file.
@@ -48,7 +48,7 @@ jobs:
       # Autobuild attempts to build any compiled languages  (C/C++, C#, Go, 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@v4
+        uses: github/codeql-action/autobuild@45cbd0c69e560cd9e7cd7f8c32362050c9b7ded2 # v4
 
       # ℹ️ Command-line programs to run using the OS shell.
       # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -61,6 +61,6 @@ jobs:
       #   ./location_of_script_within_repo/buildscript.sh
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v4
+        uses: github/codeql-action/analyze@45cbd0c69e560cd9e7cd7f8c32362050c9b7ded2 # v4
         with:
           category: '/language:${{matrix.language}}'
diff --git a/.github/workflows/crowdin-download-stable.yml b/.github/workflows/crowdin-download-stable.yml
index 8a6ac6df277..1b8b97952db 100644
--- a/.github/workflows/crowdin-download-stable.yml
+++ b/.github/workflows/crowdin-download-stable.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Increase Git http.postBuffer
         # This is needed due to a bug in Ubuntu's cURL version?
@@ -24,7 +24,7 @@ jobs:
 
       # Download the translation files from Crowdin
       - name: crowdin action
-        uses: crowdin/github-action@v2
+        uses: crowdin/github-action@b4b468cffefb50bdd99dd83e5d2eaeb63c880380 # v2
         with:
           upload_sources: false
           upload_translations: false
@@ -50,7 +50,7 @@ jobs:
 
       # Create or update the pull request
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7.0.8
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           commit-message: 'New Crowdin translations'
           title: 'New Crowdin Translations for ${{ github.base_ref || github.ref_name }} (automated)'
diff --git a/.github/workflows/crowdin-download.yml b/.github/workflows/crowdin-download.yml
index 89125fb2db4..d870177270e 100644
--- a/.github/workflows/crowdin-download.yml
+++ b/.github/workflows/crowdin-download.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Increase Git http.postBuffer
         # This is needed due to a bug in Ubuntu's cURL version?
@@ -26,7 +26,7 @@ jobs:
 
       # Download the translation files from Crowdin
       - name: crowdin action
-        uses: crowdin/github-action@v2
+        uses: crowdin/github-action@b4b468cffefb50bdd99dd83e5d2eaeb63c880380 # v2
         with:
           upload_sources: false
           upload_translations: false
@@ -52,7 +52,7 @@ jobs:
 
       # Create or update the pull request
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@22a9089034f40e5a961c8808d113e2c98fb63676 # v7
         with:
           commit-message: 'New Crowdin translations'
           title: 'New Crowdin Translations (automated)'
diff --git a/.github/workflows/crowdin-upload.yml b/.github/workflows/crowdin-upload.yml
index e2764b1ec75..be83e153ffe 100644
--- a/.github/workflows/crowdin-upload.yml
+++ b/.github/workflows/crowdin-upload.yml
@@ -23,10 +23,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: crowdin action
-        uses: crowdin/github-action@v2
+        uses: crowdin/github-action@b4b468cffefb50bdd99dd83e5d2eaeb63c880380 # v2
         with:
           upload_sources: true
           upload_translations: false
diff --git a/.github/workflows/format-check.yml b/.github/workflows/format-check.yml
index 6803686b4ff..0177f1c271d 100644
--- a/.github/workflows/format-check.yml
+++ b/.github/workflows/format-check.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Javascript environment
         uses: ./.github/actions/setup-javascript
diff --git a/.github/workflows/lint-css.yml b/.github/workflows/lint-css.yml
index 51a78d679fc..9f9edba3f75 100644
--- a/.github/workflows/lint-css.yml
+++ b/.github/workflows/lint-css.yml
@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Javascript environment
         uses: ./.github/actions/setup-javascript
diff --git a/.github/workflows/lint-haml.yml b/.github/workflows/lint-haml.yml
index d3452c9ffc2..2abe2e96d90 100644
--- a/.github/workflows/lint-haml.yml
+++ b/.github/workflows/lint-haml.yml
@@ -33,10 +33,10 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1
         with:
           bundler-cache: true
 
diff --git a/.github/workflows/lint-js.yml b/.github/workflows/lint-js.yml
index c9ba1a13f17..705c28a12e7 100644
--- a/.github/workflows/lint-js.yml
+++ b/.github/workflows/lint-js.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Javascript environment
         uses: ./.github/actions/setup-javascript
diff --git a/.github/workflows/lint-ruby.yml b/.github/workflows/lint-ruby.yml
index e73617d85da..7fc1371c189 100644
--- a/.github/workflows/lint-ruby.yml
+++ b/.github/workflows/lint-ruby.yml
@@ -35,15 +35,15 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1
         with:
           bundler-cache: true
 
       - name: Set-up RuboCop Problem Matcher
-        uses: r7kamura/rubocop-problem-matchers-action@v1
+        uses: r7kamura/rubocop-problem-matchers-action@59f1a0759f50cc2649849fd850b8487594bb5a81 # v1
 
       - name: Run rubocop
         run: bin/rubocop
diff --git a/.github/workflows/rebase-needed.yml b/.github/workflows/rebase-needed.yml
index f0fc8b0db72..cf594c2c6c4 100644
--- a/.github/workflows/rebase-needed.yml
+++ b/.github/workflows/rebase-needed.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Check for merge conflicts
-        uses: eps1lon/actions-label-merge-conflict@v3
+        uses: eps1lon/actions-label-merge-conflict@1df065ebe6e3310545d4f4c4e862e43bdca146f0 # v3
         with:
           dirtyLabel: 'rebase needed :construction:'
           repoToken: '${{ secrets.GITHUB_TOKEN }}'
diff --git a/.github/workflows/test-js.yml b/.github/workflows/test-js.yml
index b8e1cc89aaa..c85754fd2f9 100644
--- a/.github/workflows/test-js.yml
+++ b/.github/workflows/test-js.yml
@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Javascript environment
         uses: ./.github/actions/setup-javascript
diff --git a/.github/workflows/test-migrations.yml b/.github/workflows/test-migrations.yml
index b1b94692f0c..03a7dcc44ad 100644
--- a/.github/workflows/test-migrations.yml
+++ b/.github/workflows/test-migrations.yml
@@ -72,7 +72,7 @@ jobs:
       BUNDLE_RETRY: 3
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Ruby environment
         uses: ./.github/actions/setup-ruby
diff --git a/.github/workflows/test-ruby.yml b/.github/workflows/test-ruby.yml
index 316bf831b6f..decfc7ef47e 100644
--- a/.github/workflows/test-ruby.yml
+++ b/.github/workflows/test-ruby.yml
@@ -32,7 +32,7 @@ jobs:
       SECRET_KEY_BASE_DUMMY: 1
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Ruby environment
         uses: ./.github/actions/setup-ruby
@@ -43,7 +43,7 @@ jobs:
           onlyProduction: 'true'
 
       - name: Cache assets from compilation
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
           path: |
             public/assets
@@ -65,7 +65,7 @@ jobs:
         run: |
           tar --exclude={"*.br","*.gz"} -zcf artifacts.tar.gz public/assets public/packs* tmp/cache/vite/last-build*.json
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         if: matrix.mode == 'test'
         with:
           path: |-
@@ -128,9 +128,9 @@ jobs:
           - '3.3'
           - '.ruby-version'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6
         with:
           path: './'
           name: ${{ github.sha }}
@@ -151,7 +151,7 @@ jobs:
           bin/flatware fan bin/rails db:test:prepare
 
       - name: Cache RSpec persistence file
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
           path: |
             tmp/rspec/examples.txt
@@ -167,7 +167,7 @@ jobs:
 
       - name: Upload coverage reports to Codecov
         if: matrix.ruby-version == '.ruby-version'
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5
         with:
           files: coverage/lcov/*.lcov
         env:
@@ -222,9 +222,9 @@ jobs:
           - '.ruby-version'
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6
         with:
           path: './'
           name: ${{ github.sha }}
@@ -247,7 +247,7 @@ jobs:
 
       - name: Cache Playwright Chromium browser
         id: playwright-cache
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
           path: ~/.cache/ms-playwright
           key: playwright-browsers-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
@@ -263,14 +263,14 @@ jobs:
       - run: bin/rspec spec/system --tag streaming --tag js
 
       - name: Archive logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         if: failure()
         with:
           name: e2e-logs-${{ matrix.ruby-version }}
           path: log/
 
       - name: Archive test screenshots
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         if: failure()
         with:
           name: e2e-screenshots-${{ matrix.ruby-version }}
@@ -360,9 +360,9 @@ jobs:
             search-image: opensearchproject/opensearch:2
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6
         with:
           path: './'
           name: ${{ github.sha }}
@@ -382,14 +382,14 @@ jobs:
       - run: bin/rspec --tag search
 
       - name: Archive logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         if: failure()
         with:
           name: test-search-logs-${{ matrix.ruby-version }}
           path: log/
 
       - name: Archive test screenshots
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
         if: failure()
         with:
           name: test-search-screenshots