diff --git a/examples/pybind11/pixi.lock b/examples/pybind11/pixi.lock
index b40d86fe1..627304e15 100644
--- a/examples/pybind11/pixi.lock
+++ b/examples/pybind11/pixi.lock
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   size: 605962
   timestamp: 1729518330784
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   size: 35433
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-- kind: conda
-  name: typing_extensions
-  version: 4.12.2
-  build: pyha770c72_0
-  subdir: noarch
-  noarch: python
-  url: https://conda.anaconda.org/conda-forge/noarch/typing_extensions-4.12.2-pyha770c72_0.conda
-  sha256: 0fce54f8ec3e59f5ef3bb7641863be4e1bf1279623e5af3d3fa726e8f7628ddb
-  md5: ebe6952715e1d5eb567eeebf25250fa7
-  depends:
-  - python >=3.8
-  license: PSF-2.0
-  license_family: PSF
-  purls:
-  - pkg:pypi/typing-extensions?source=conda-forge-mapping
-  size: 39888
-  timestamp: 1717802653893
 - kind: conda
   name: typing_extensions
   version: 4.12.2
@@ -3965,23 +3622,6 @@ packages:
   license: LGPL-2.1 and GPL-2.0
   size: 217804
   timestamp: 1660346976440
-- kind: conda
-  name: zipp
-  version: 3.20.2
-  build: pyhd8ed1ab_0
-  subdir: noarch
-  noarch: python
-  url: https://conda.anaconda.org/conda-forge/noarch/zipp-3.20.2-pyhd8ed1ab_0.conda
-  sha256: 1e84fcfa41e0afdd87ff41e6fbb719c96a0e098c1f79be342293ab0bd8dea322
-  md5: 4daaed111c05672ae669f7036ee5bba3
-  depends:
-  - python >=3.8
-  license: MIT
-  license_family: MIT
-  purls:
-  - pkg:pypi/zipp?source=conda-forge-mapping
-  size: 21409
-  timestamp: 1726248679175
 - kind: conda
   name: zipp
   version: 3.20.2
diff --git a/examples/pybind11/pyproject.toml b/examples/pybind11/pyproject.toml
index adfb9707e..e99686da5 100644
--- a/examples/pybind11/pyproject.toml
+++ b/examples/pybind11/pyproject.toml
@@ -3,12 +3,23 @@ build-backend = "scikit_build_core.build"
 requires = ["scikit-build-core", "pybind11"]
 
 [project]
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+]
 description = "A simple pybind11 example"
 name = "mysum"
+requires-python = ">=3.7"
 version = "0.1.0"
 
 [tool.scikit-build]
 cmake.source-dir = "."
+sdist.exclude = [".pixi"]
 wheel.packages = ["mysum"]
 
 [tool.pixi.project]