diff --git a/setup.py b/setup.py
index 223d5363a..eb11593f0 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@ def get_long_description():
             "ghapi",
             "pytest",
             "pytest-timeout",
-            "PyPartMC==0.7.1",
+            "PyPartMC==0.9.1",
         ]
     },
     author="https://github.com/open-atmos/PySDM/graphs/contributors",