diff --git a/pyproject.toml b/pyproject.toml
index 921bbaa..498ae1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ authors = [
 ]
 license = {text = "MIT"}
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.8,<3.12"
 dynamic = ["version"]
 
 keywords = ["emulsions", "image-analysis"]