diff --git a/MANIFEST.in b/MANIFEST.in
index 005115f18..c813a86a8 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,6 @@
 include README.rst RELEASE.rst
 include LICENSE
-include Makefile tox.ini
+include Makefile
 include pyproject.toml
 
 graft LICENSES
diff --git a/pyproject.toml b/pyproject.toml
index 8436663bd..876a48ee5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,6 @@
 requires = [
     "setuptools",
     "versioneer", 
-    "wheel",
     # Comments on numpy build requirement range:
     #
     #   1. >=2.0.x is the numpy requirement for wheel builds for distribution
@@ -15,6 +14,7 @@ requires = [
     #      it should not be loosened more than that.
     "numpy>=2,<2.5"
 ]
+build-backend = "setuptools.build_meta"
 
 
 [tool.pytest.ini_options]
diff --git a/setup.py b/setup.py
index caf536da4..ff623c521 100644
--- a/setup.py
+++ b/setup.py
@@ -157,7 +157,6 @@ def get_long_description():
     "Environment :: Console",
     "Intended Audience :: Science/Research",
     "Intended Audience :: Financial and Insurance Industry",
-    "License :: OSI Approved :: BSD License",
     "Operating System :: OS Independent",
     "Programming Language :: C",
     "Programming Language :: Python",