diff --git a/.github/workflows/host_docs.yaml b/.github/workflows/host_docs.yaml
index b29c84a..5cf0217 100644
--- a/.github/workflows/host_docs.yaml
+++ b/.github/workflows/host_docs.yaml
@@ -29,6 +29,7 @@ jobs:
           python -m pip install sphinx-rtd-theme
           # python -m pip install sphinxcontrib-apidoc
           python -m pip install sphinx-autoapi
+          python -m install myst_parser
 
       - name: make the sphinx docs
         run: |