diff --git a/.github/workflows/assign-author.yml b/.github/workflows/assign-author.yml
index aea525d..ae8578d 100644
--- a/.github/workflows/assign-author.yml
+++ b/.github/workflows/assign-author.yml
@@ -4,6 +4,9 @@ on:
     pull_request_target:
         types: [opened, reopened]
 
+permissions:
+    pull-requests: write
+
 jobs:
     assign-author:
         runs-on: ubuntu-latest