diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4e7960b2517dee1e49324ec1245b1a49595126bc..8178df62d1c796588ce38714f1978efeea0b9875 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -3,5 +3,6 @@ mistune
 sphinx_rtd_theme
 numpy >= 1.16.4
 cython >= 0.25.2
+networkx
 paddlepaddle
 pgl