diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index d14b482..870f0e6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,8 +7,11 @@ on:
 jobs:
   deploy:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write  # To push a branch 
+      pull-requests: write  # To create a PR from that branch
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Install mdbook