diff --git a/pyproject.toml b/pyproject.toml
index c5e35e7..fdb4bc4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,6 @@ classifiers = [  #! Update me
   "License :: OSI Approved :: MIT License",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3.9",
-  "Programming Language :: Python :: 4.0",
 ]
 
 [tool.poetry.scripts]