diff --git a/pyproject.toml b/pyproject.toml
index 9849618..094a17d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3"
 ]
-requires-python = ">= 3.8"
+requires-python = ">= 3.9"
 dependencies = [
     "Flask",
     "Flask-Markdown",