diff --git a/pyproject.toml b/pyproject.toml
index 12094861..15f97eb5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,7 +58,7 @@ keywords = [
 license = "MIT"
 name = "fuji"
 readme = "README.md"
-requires-python = ">=3.11"
+requires-python = "~=3.11"  # at the moment only Python 3.11 is supported
 version = "3.1.1"
 
 [project.optional-dependencies]