diff --git a/admin/.gitignore b/admin/.gitignore
new file mode 100644
index 00000000..a4d089c1
--- /dev/null
+++ b/admin/.gitignore
@@ -0,0 +1 @@
+pypi_dist/
diff --git a/admin/build_pypi_packages.sh b/admin/build_pypi_packages.sh
new file mode 100755
index 00000000..d29e0407
--- /dev/null
+++ b/admin/build_pypi_packages.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+set -e
+
+TAG=develop
+if [ "$1" != "" ]; then
+    TAG=$1
+fi
+
+cd $(dirname $(readlink -f $0))
+
+if ! ../venv/bin/twine -h > /dev/null 2> /dev/null; then
+    echo "Did not find twine. Please run ../venv/bin/pip install twine"
+    exit 1
+fi
+
+if [[ -n $(git status -s) ]]; then
+    echo "Repository is dirty."
+    git status -s
+    exit 1
+fi
+
+if [[ $(git rev-parse --abbrev-ref HEAD) != ${TAG} && $(git describe --exact-match --tags 2>/dev/null) != ${TAG} ]]; then
+    echo "Repository is currently not on branch/tag ${TAG}."
+    exit 1
+fi
+
+echo "Building sdist and manylinux wheel"
+sudo rm -rf ./pypi_dist
+docker run --rm -v $(pwd)/..:/problemtools -v $(pwd)/pypi_dist:/dist quay.io/pypa/manylinux_2_28_x86_64 /bin/bash -c "
+    yum -y install boost-devel gmp-devel ;
+    mkdir /build ;
+    cd /build ;
+    git config --global --add safe.directory /problemtools/.git ;
+    git clone /problemtools ;
+    cd problemtools ;
+    git checkout ${TAG} ;
+    /opt/python/cp311-cp311/bin/python -m build ;
+    auditwheel repair dist/problemtools-*.whl ;
+    cp dist/*.tar.gz /dist ;
+    cp wheelhouse/*.whl /dist"
+sudo chown -R $USER:$USER pypi_dist
+
+../venv/bin/twine check pypi_dist/*
+
+echo "Running verifyproblem from wheel on all examples"
+TEMPDIR=$(mktemp -d)
+python3 -m venv "${TEMPDIR}"
+"${TEMPDIR}/bin/pip" install pypi_dist/problemtools*manylinux*whl
+shopt -s extglob
+if ! "${TEMPDIR}/bin/verifyproblem" ../examples/!(README.md); then
+    echo "Running verifyproblem on all examples failed. Please review output above to debug."
+    rm -rf "${TEMPDIR}"
+    exit 1
+fi
+rm -rf "${TEMPDIR}"
+
+echo "Sucessfully built packages. If you're happy with them, upload:"
+echo "    ../venv/bin/twine upload --verbose pypi_dist/*"
diff --git a/problemtools/py.typed b/problemtools/py.typed
new file mode 100644
index 00000000..e69de29b
diff --git a/pyproject.toml b/pyproject.toml
index 7afdbff5..3a99cedc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,16 +5,13 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "problemtools"
 authors = [
-    {name = "Fredrik Niemela", email = "niemela@kattis.com"},
-    {name = "Gunnar Kreitz", email = "gkreitz@kattis.com"},
-    {name = "Mikael Goldman", email = "migo@kattis.com"},
-    {name = "Pehr Söderman", email = "pehrs@kattis.com"},
-    {name = "Per Austrin", email = "austrin@kattis.com"},
+    {name = "Kattis AB", email = "contact@kattis.com"},
 ]
 description = "Kattis Problem Tools"
 readme = "README.md"
 license = "MIT"
 keywords = ["kattis", "problemtools", "icpc", "clics"]
+requires-python = ">= 3.11"
 
 dependencies = [
     "colorlog",
@@ -44,6 +41,7 @@ include = ["problemtools", "problemtools.*"]
 
 [tool.setuptools_scm]
 version_file = "problemtools/_version.py"
+local_scheme = "no-local-version"
 
 [tool.ruff]
 line-length = 130