diff --git a/docs/conf.py b/docs/conf.py
index 21f2331bc4..bd273834b8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -30,6 +30,8 @@
 # The full version, including alpha/beta/rc tags
 release = 'v0.5'
 
+github_doc_root = "https://github.com/Microsoft/nni/tree/dev-doc/docs"
+
 # -- General configuration ---------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.