diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index 62b9ba4..80b24ad 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -5,6 +5,16 @@ on:
       - main
     tags: ['*']
   pull_request:
+
+# The reusable documentation workflow requests these permissions for its
+# build job; declare them here so the call starts even when the repo's
+# default GITHUB_TOKEN permissions are read-only.
+permissions:
+  actions: write
+  contents: write
+  pull-requests: write
+  statuses: write
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}