diff --git a/pyproject.toml b/pyproject.toml
index 6765de9..be1a7b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "pyxirr"
 description-content-type = "text/markdown; charset=UTF-8; variant=GFM"
-requires-python = ">=3.7,<3.13"
+requires-python = ">=3.7,<3.14"
 classifiers = [
     "Development Status :: 4 - Beta",
     "Topic :: Office/Business :: Financial",
@@ -13,6 +13,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "License :: OSI Approved :: The Unlicense (Unlicense)",
 ]