diff --git a/requirements.txt b/requirements.txt
index 76305d0d..13218963 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ shapely
 imgaug
 pyclipper
 lmdb
+opencv-python==4.2.0.32
 tqdm
 numpy
 visualdl