diff --git a/requirements.txt b/requirements.txt
index 76b9ddbbf..b2f249fac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ python-rapidjson
 opencv-python-headless==4.2.0.34
 pandas
 psutil
-"PySide2>=5.12.0,<=5.14.1"
+PySide2>=5.12.0,<=5.14.1
 pyzmq
 pyyaml
 imgaug==0.3.0