diff --git a/.github/actions/prepare-runner/action.yml b/.github/actions/prepare-runner/action.yml
index 8b9a921..c858930 100644
--- a/.github/actions/prepare-runner/action.yml
+++ b/.github/actions/prepare-runner/action.yml
@@ -4,7 +4,7 @@ runs:
   using: composite
   steps:
     - name: Install Node.js
-      uses: actions/setup-node@v6
+      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
       with:
         node-version: 24
     - name: Enable Corepack and pnpm
@@ -13,7 +13,7 @@ runs:
         corepack enable
         corepack install
     - name: Enable pnpm cache
-      uses: actions/setup-node@v6
+      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
       with:
         node-version: 24
         cache: pnpm
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 6fc69e3..3280fb4 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -18,14 +18,14 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - uses: ./.github/actions/prepare-runner
 
       - name: Build docs
         run: pnpm --filter nanotags-docs build
 
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/upload-pages-artifact@7b1f4a764d45c48632c6b24a0339c27f5614fb0b # v4.0.0
         with:
           path: apps/docs/dist
 
@@ -37,4 +37,4 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128 # v5.0.0
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index de466de..0719253 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -13,6 +13,6 @@ jobs:
     env:
       CI_RUN: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: ./.github/actions/prepare-runner
       - run: pnpm lint
diff --git a/.github/workflows/pkg-check.yml b/.github/workflows/pkg-check.yml
index 853f55e..54a2ad4 100644
--- a/.github/workflows/pkg-check.yml
+++ b/.github/workflows/pkg-check.yml
@@ -13,7 +13,7 @@ jobs:
     env:
       CI_RUN: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: ./.github/actions/prepare-runner
       - run: pnpm --filter nanotags run build
       - run: pnpm --filter nanotags exec publint
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index bc84c70..64aad65 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -13,7 +13,7 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: ./.github/actions/prepare-runner
       - run: pnpm --filter nanotags build
       - run: cp README.md LICENSE.md packages/nanotags/
diff --git a/.github/workflows/size-limit.yml b/.github/workflows/size-limit.yml
index 6bc3f97..584e9ea 100644
--- a/.github/workflows/size-limit.yml
+++ b/.github/workflows/size-limit.yml
@@ -17,15 +17,15 @@ jobs:
       CI_RUN: true
       CI_JOB_NUMBER: 1
     steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: 24
       - shell: bash
         run: |
           corepack enable
           corepack prepare pnpm@latest --activate
-      - uses: andresz1/size-limit-action@v1
+      - uses: andresz1/size-limit-action@94bc357df29c36c8f8d50ea497c3e225c3c95d1d # v1.8.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           package_manager: pnpm
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e8097c4..19089a2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,6 +13,6 @@ jobs:
     env:
       CI_RUN: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: ./.github/actions/prepare-runner
       - run: pnpm test
diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 8b0a1cd..fead826 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -13,6 +13,6 @@ jobs:
     env:
       CI_RUN: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: ./.github/actions/prepare-runner
       - run: pnpm typecheck