diff --git a/.github/actions/prepare-runner/action.yml b/.github/actions/prepare-runner/action.yml
index 8b9a921..a6b0e8b 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@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
       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@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
       with:
         node-version: 24
         cache: pnpm
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 7f91354..16d3767 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -20,7 +20,7 @@ jobs:
     env:
       CI: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - uses: ./.github/actions/prepare-runner
 
@@ -30,7 +30,7 @@ jobs:
       - name: Build docs
         run: cd docs && pnpm astro build
 
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9 # v5.0.0
         with:
           path: docs/dist
 
@@ -42,4 +42,4 @@ 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/publish.yml b/.github/workflows/publish.yml
index ff27428..17b0c52 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -12,9 +12,9 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: ./.github/actions/prepare-runner
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           registry-url: "https://registry.npmjs.org"
       - run: pnpm oxlint
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