diff --git a/.github/workflows/claude-code.yml b/.github/workflows/claude-code.yml
index ac2e8dbb..e069019a 100644
--- a/.github/workflows/claude-code.yml
+++ b/.github/workflows/claude-code.yml
@@ -17,6 +17,8 @@ jobs:
   check-permissions:
     name: Check permissions
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     outputs:
       has-permission: ${{ steps.check.outputs.has-permission }}
     steps:
diff --git a/.github/workflows/manual-deployment.yml b/.github/workflows/manual-deployment.yml
index 6ce9859b..7a3a3f27 100644
--- a/.github/workflows/manual-deployment.yml
+++ b/.github/workflows/manual-deployment.yml
@@ -1,5 +1,8 @@
 name: Manual Deployment Execution
 
+permissions:
+  contents: read
+
 on:
   workflow_dispatch:
     inputs:
diff --git a/.github/workflows/test-infra.yml b/.github/workflows/test-infra.yml
index 6ce9859b..8b69956d 100644
--- a/.github/workflows/test-infra.yml
+++ b/.github/workflows/test-infra.yml
@@ -1,4 +1,6 @@
 name: Manual Deployment Execution
+permissions:
+  contents: read
 
 on:
   workflow_dispatch: