diff --git a/.github/workflows/build-doc.yml b/.github/workflows/build-doc.yml
index 32e18cf..6a6feb2 100644
--- a/.github/workflows/build-doc.yml
+++ b/.github/workflows/build-doc.yml
@@ -19,7 +19,7 @@ jobs:
           python-version: '3.8'
           cache: 'pip' # caching pip dependencies
       - run: pip install sphinx sphinx-rtd-theme
-      - run: python3 -m sphinx . docs
+      - run: python3 -m sphinx ./doc docs
       - name: publish doc
         shell: bash
         run: |