diff --git a/pyproject.toml b/pyproject.toml
index 59c1c20b..63ea73cf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ name = "PyPartMC"
 dynamic = ["version"]
 description = "Python interface to PartMC"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 authors = [
     {name = "https://github.com/open-atmos/PyPartMC/graphs/contributors", email = "nriemer@illinois.edu"}
 ]