diff --git a/pyproject.toml b/pyproject.toml
index 8b5fb3f..5913beb 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ classifiers = [
   "Framework :: Sphinx",
   "Framework :: Sphinx :: Theme",
   "Intended Audience :: Developers",
-  "License :: OSI Approved :: MIT License",
+  "License :: Other/Proprietary License",
   "Operating System :: OS Independent",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3.8",
@@ -32,11 +32,14 @@ classifiers = [
   "Topic :: Software Development :: Documentation",
 ]
 dependencies = [
-  "sphinx >= 6.0,<9.0",
+  "sphinx >= 8.0,<9.0",
 ]
 dynamic = ["version"]
 requires-python = ">=3.8"
 
+[project.entry-points."sphinx.html_themes"]
+sphinx_theme_ref = "sphinx_theme_ref"
+
 [project.urls]
 Bitbucket = "https://bitbucket.org/tiaracodes/sphinx-theme-ref"
 GitHub = "https://github.com/oxbqkwwxfrqccwtg/sphinx-theme-ref"