diff --git a/mmocr/__init__.py b/mmocr/__init__.py
index faf1ae81e..4524c4c3c 100644
--- a/mmocr/__init__.py
+++ b/mmocr/__init__.py
@@ -43,7 +43,7 @@
     f'<{mmengine_maximum_version}.'
 
 mmdet_minimum_version = '3.0.0rc5'
-mmdet_maximum_version = '3.2.0'
+mmdet_maximum_version = '3.4.0'
 mmdet_version = digit_version(mmdet.__version__)
 
 assert (mmdet_version >= digit_version(mmdet_minimum_version)