diff --git a/readthedocs.yml b/readthedocs.yml
index 86d9a434..12df42af 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -25,7 +25,7 @@ build:
     post_install:
       # Install dependencies with 'docs' dependency group
       # https://python-poetry.org/docs/managing-dependencies/#dependency-groups
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install
+      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install -E docs
       - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry env info
       - pip freeze