diff --git a/requirements/mmlab.txt b/requirements/mmlab.txt
index 0f577f05..9f3ea770 100644
--- a/requirements/mmlab.txt
+++ b/requirements/mmlab.txt
@@ -1,4 +1,4 @@
 # use openmim to install
 mmcv<=2.1.0
-mmdet>=3.0.0, <=3.3.0 # mmyolo currently does not support mmdet 3.1.0
+mmdet<=3.3.0, >=3.3.0 # mmyolo currently does not support mmdet 3.1.0
 mmengine>=0.8.2