diff --git a/.github/workflows/deploy_package.yaml b/.github/workflows/deploy_package.yaml
index 721d485..9e59a15 100644
--- a/.github/workflows/deploy_package.yaml
+++ b/.github/workflows/deploy_package.yaml
@@ -8,6 +8,8 @@ on:
 jobs:
   deploy:
     runs-on: ubuntu-latest
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python