diff --git a/tests/requirements.txt b/tests/requirements.txt
index 06c559b64..02bd96682 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -11,7 +11,7 @@ pytest-xdist
 Pillow>=8.1.2,<9.0
 # Use pre-compiled wheel from packagecloud
 dlib==19.24.2.post1
-flask-cors>=3.0.9,<4.0.0
+flask-cors>=3.0.9,<7.0.0
 flask>=1.1.2,<2.0.0
 gpiozero>=1.6.2,<2.0.0
 imutils>=0.5.4,<1.0.0