diff --git a/python/requirements.txt b/python/requirements.txt
index 23b5289d5109fcb119f143eef4deb65198555d6a..8823175121b0d98f4defdcc58332e039b46bff7b 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -12,3 +12,4 @@ pyyaml>=1.3.0
 sentencepiece==0.1.92
 flask>=1.1.2
 ujson>=2.0.3
+shapely==1.6.1