diff --git a/docs/conf.py b/docs/conf.py
index bb3a9142..a5cff67c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -20,6 +20,10 @@
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 sys.path.insert(0, os.path.abspath(".."))
 
+# For plugins that can not read conf.py.
+# See also: https://github.com/docascode/sphinx-docfx-yaml/issues/85
+sys.path.insert(0, os.path.abspath("."))
+
 __version__ = ""
 
 # -- General configuration ------------------------------------------------