diff --git a/.github/workflows/verify.yaml b/.github/workflows/verify.yaml
index 3fd5b3f..09bce38 100644
--- a/.github/workflows/verify.yaml
+++ b/.github/workflows/verify.yaml
@@ -2,25 +2,32 @@ name: Verify
 
 on:
   push:
-    branches: main
+    branches:
+      - main
   pull_request:
-    branches: main
+    branches:
+      - main
 
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     runs-on: ubuntu-latest
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: true
+          persist-credentials: false
 
       - name: setup deno
-        uses: denoland/setup-deno@v2
+        uses: denoland/setup-deno@667a34cdef165d8d2b2e98dde39547c9daac7282 # v2.0.4
         with:
           deno-version: v2.x
 
@@ -34,7 +41,7 @@ jobs:
         run: make
 
       - name: upload wasm artifact
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: clayterm-wasm
           path: |
@@ -56,17 +63,18 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: true
+          persist-credentials: false
 
       - name: setup deno
-        uses: denoland/setup-deno@v2
+        uses: denoland/setup-deno@667a34cdef165d8d2b2e98dde39547c9daac7282 # v2.0.4
         with:
           deno-version: v2.x
 
       - name: download wasm artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: clayterm-wasm
           path: .
@@ -79,12 +87,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: true
+          persist-credentials: false
 
       - name: setup deno
-        uses: denoland/setup-deno@v2
+        uses: denoland/setup-deno@667a34cdef165d8d2b2e98dde39547c9daac7282 # v2.0.4
         with:
           deno-version: v2.x
 
@@ -102,17 +111,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: true
+          persist-credentials: false
 
       - name: setup deno
-        uses: denoland/setup-deno@v2
+        uses: denoland/setup-deno@667a34cdef165d8d2b2e98dde39547c9daac7282 # v2.0.4
         with:
           deno-version: v2.x
 
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 24