diff --git a/README.md b/README.md
index 93051f5..6d6194f 100644
--- a/README.md
+++ b/README.md
@@ -16,9 +16,11 @@ pip install torch==1.8.1+cu111 torchvision==0.9.1+cu111 torchaudio==0.8.1 -f htt
 
 pip install mmcv-full==1.3.5 -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.8.0/index.html
 
+pip install git+https://github.com/open-mmlab/mmdetection.git@v2.13.0
+
 git clone git@github.com:xiong-jie-y/ozeu.git
 cd ozeu
-pip install -e . 
+pip install -e .
 ```
 
 ## Usage
diff --git a/setup.py b/setup.py
index 404bdae..2f755eb 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ def _parse_requirements(path):
 from subprocess import getoutput
 
 class PostInstall(install):
-    pkgs = ' git+https://github.com/open-mmlab/mmdetection.git#v2.13.0'
+    pkgs = ' git+https://github.com/open-mmlab/mmdetection.git@v2.13.0'
     def run(self):
         install.run(self)
         print(getoutput('pip install'+self.pkgs))
@@ -27,5 +27,8 @@ def run(self):
     version=__version__,
     packages=setuptools.find_packages(),
     install_requires=requirements,
-    cmdclass={'install': PostInstall}
+    cmdclass={'install': PostInstall},
+    dependency_links=[
+        'https://github.com/open-mmlab/mmdetection.git',
+    ],
 )