diff --git a/dygraph/requirements.txt b/dygraph/requirements.txt
index 170c8a3b02587483c574a831b5f248ffe926ee6b..c50d347b2db37371ddd5ab48d840f7399e3cea0a 100644
--- a/dygraph/requirements.txt
+++ b/dygraph/requirements.txt
@@ -4,3 +4,4 @@ visualdl>=2.0.0b
 opencv-python
 PyYAML
 shapely
+scipy