diff --git a/.github/workflows/add_assignee_to_pr.yml b/.github/workflows/add_assignee_to_pr.yml
index 9821462..48802ce 100644
--- a/.github/workflows/add_assignee_to_pr.yml
+++ b/.github/workflows/add_assignee_to_pr.yml
@@ -12,6 +12,9 @@
 on:
   workflow_call:
 
+permissions:
+  pull-requests: write
+
 jobs:
   add-assignee-to-pr:
     name: Add assignee to PR