diff --git a/pyproject.toml b/pyproject.toml
index a808bce..a4f8ae4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ classifiers = [
     "Programming Language :: Python :: 3 :: Only",
     "Topic :: Scientific/Engineering :: Physics",
     "License :: OSI Approved :: MIT License",
-    "License :: OSI Approved :: Apache-2.0 License",
+    "License :: OSI Approved :: Apache License, Version 2.0 (Apache-2.0)",
 ]
 
 [tool.poetry.dependencies]