diff --git a/pyproject.toml b/pyproject.toml
index cd19f43f..880e5351 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["flit_core >=3.2,<3.11"] # THIS SHOULD BE REVERTED TO '["flit_core >=3.2,<4"]'
+requires = ["flit_core >=3.2,<4"]
 build-backend = "flit_core.buildapi"
 
 [project]
@@ -8,8 +8,9 @@ version = "0.0.1"
 description = "A demo project for showing different protocol communications (API REST, gRPC) both in Python and C++."
 authors = [{name = "Alexander Kaszynski", email = "alexander.kaszynski@ansys.com"}, {name = "Roberto Pastor Muela", email = "roberto.pastormuela@ansys.com"}]
 readme = "README.md"
-license = {file = "LICENSE"}
-classifiers = ["License :: OSI Approved :: MIT License"]
+license = "MIT"
+license-files = ["LICENSE"]
+classifiers = []
 
 [project.urls]
 Home = "https://github.com/ansys/api-eigen-example"