diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ef9099c..67e6842 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@v6.0.9
 
       - name: Use Node.js 24
         uses: actions/setup-node@v7
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index c884271..896cbd7 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -42,7 +42,7 @@ jobs:
           fetch-depth: 1
 
       - name: Set up pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@v6.0.9
 
       - name: Use Node.js 24
         uses: actions/setup-node@v7
diff --git a/.github/workflows/dependabot-autoformat.yml b/.github/workflows/dependabot-autoformat.yml
index f558277..aee9bad 100644
--- a/.github/workflows/dependabot-autoformat.yml
+++ b/.github/workflows/dependabot-autoformat.yml
@@ -34,7 +34,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@v6.0.9
 
       - name: Use Node.js 24
         uses: actions/setup-node@v7
diff --git a/.github/workflows/npm.yml b/.github/workflows/npm.yml
index f167fd4..92f9a67 100644
--- a/.github/workflows/npm.yml
+++ b/.github/workflows/npm.yml
@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@v6.0.9
 
       - name: Setup Node.js
         uses: actions/setup-node@v7