diff --git a/.github/workflows/release_deploy_windows.yml b/.github/workflows/release_deploy_windows.yml
index bff65fccd0..78041925e1 100644
--- a/.github/workflows/release_deploy_windows.yml
+++ b/.github/workflows/release_deploy_windows.yml
@@ -2,6 +2,9 @@ name: Publish MSIX to Microsoft Store
 
 on: workflow_dispatch
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   build:
     runs-on: windows-latest