diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 447f6584..8091593c 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -9,6 +9,9 @@ jobs:
   deploy:
     name: Deploy to GitHub Pages
     runs-on: ubuntu-latest
+    permissions:
+      # Grant write permission here so it can be pushed to gh-pages branch
+      contents: write
     defaults:
       run:
         working-directory: website