diff --git a/requirements.txt b/requirements.txt
index 2ccd486f34..6bf5d7c0b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,7 @@ numpy
 visualdl
 rapidfuzz
 opencv-contrib-python
+opencv-python
 cython
 lxml
 premailer