diff --git a/.github/workflows/doxygen.yml b/.github/workflows/doxygen.yml
index 8ad1b197..c676f7d8 100644
--- a/.github/workflows/doxygen.yml
+++ b/.github/workflows/doxygen.yml
@@ -1,4 +1,9 @@
 name: Doxygen Generation
+
+# Needs this to write to gh-pages branch.
+permissions:
+  contents: write
+
 on:
   push:
     branches: [main]