diff --git a/setup.py b/setup.py
index 7de0c9f..37023af 100644
--- a/setup.py
+++ b/setup.py
@@ -17,10 +17,10 @@ def readme():
         install_requires=[
             'numpy',
             'pandas',
-            'louvain',
+            'louvain==0.6.1',
             'scikit-learn',
             'psutil',
-            'scanpy==1.4.6'],
+            'scanpy==1.4.4'],
         scripts=['cli/sccaf', 'cli/sccaf-assess', 'cli/sccaf-assess-merger', 'cli/sccaf-regress-out'],
         author='Chichau Miau',
         author_email='zmiao@ebi.ac.uk',