diff --git a/.github/workflows/pr-auto-milestone.yml b/.github/workflows/pr-auto-milestone.yml
index a24f82809682..76a185dd8b5e 100644
--- a/.github/workflows/pr-auto-milestone.yml
+++ b/.github/workflows/pr-auto-milestone.yml
@@ -15,6 +15,8 @@ jobs:
   pr-without-milestones:
     runs-on: ubuntu-latest
     if: github.repository == 'qgis/QGIS'
+    permissions:
+      pull-requests: write
     steps:
       # list the tags and milestones
       - uses: octokit/graphql-action@v2.x