diff --git a/pyproject.toml b/pyproject.toml
index 59b7c69c2..e17bc449f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ classifiers=[
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
 ]
 dependencies = [
   "NREL-rex>=0.2.84",