diff --git a/openmc_plotter/__init__.py b/openmc_plotter/__init__.py
index f0ede3d..bb88f5b 100644
--- a/openmc_plotter/__init__.py
+++ b/openmc_plotter/__init__.py
@@ -1 +1,3 @@
-__version__ = '0.4.1'
+from importlib.metadata import version
+
+__version__ = version("openmc-plotter")
diff --git a/openmc_plotter/plotgui.py b/openmc_plotter/plotgui.py
index cd850da..c33d161 100644
--- a/openmc_plotter/plotgui.py
+++ b/openmc_plotter/plotgui.py
@@ -280,7 +280,7 @@ def mouseMoveEvent(self, event):
 
             if self.model.tally_data is not None:
                 tid, value = self.getTallyInfo(event)
-                if value is not None and value != np.nan:
+                if value is not None and not np.isnan(value):
                     self.updateTallyDataIndicatorValue(value)
                     tallyInfo = "Tally {} {}: {:.5E}".format(
                         tid, cv.tallyValue, value)
diff --git a/pyproject.toml b/pyproject.toml
index c953815..ca4045b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,2 +1,57 @@
 [build-system]
-requires = ["setuptools", "wheel"]
\ No newline at end of file
+requires = ["setuptools>=80", "setuptools_scm>=8", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "openmc-plotter"
+dynamic = ["version"]
+authors = [
+  { name = "OpenMC Development Team", email = "openmc@anl.gov" },
+]
+license = "MIT"
+description = "Plotting tool for OpenMC models and tally data"
+readme = "README.md"
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Intended Audience :: Developers",
+  "Intended Audience :: End Users/Desktop",
+  "Intended Audience :: Science/Research",
+  "Natural Language :: English",
+  "Topic :: Scientific/Engineering",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+]
+requires-python = ">=3.10"
+dependencies = [
+  "openmc>=0.15.0",
+  "numpy",
+  "matplotlib",
+  "PySide6",
+]
+
+[project.optional-dependencies]
+test = ["pytest", "pytest-qt"]
+vtk = ["vtk"]
+
+[project.urls]
+"Homepage" = "https://github.com/openmc-dev/plotter"
+"Download" = "https://github.com/openmc-dev/plotter"
+"Issue Tracker" = "https://github.com/openmc-dev/plotter/issues"
+"Source Code" = "https://github.com/openmc-dev/plotter"
+
+[project.scripts]
+openmc-plotter = "openmc_plotter.__main__:main"
+
+[tool.setuptools]
+include-package-data = true
+
+[tool.setuptools.packages.find]
+include = ["openmc_plotter*"]
+
+[tool.setuptools.package-data]
+openmc_plotter = ["assets/*.png"]
+
+[tool.setuptools_scm]
diff --git a/setup.py b/setup.py
deleted file mode 100644
index c0fdaf1..0000000
--- a/setup.py
+++ /dev/null
@@ -1,63 +0,0 @@
-from pathlib import Path
-
-from setuptools import setup
-
-# Get version information from __init__.py. This is ugly, but more reliable than
-# using an import.
-with open('openmc_plotter/__init__.py', 'r') as f:
-    version = f.readlines()[-1].split()[-1].strip("'")
-
-# read the contents of your README file
-long_description = Path(__file__).with_name("README.md").read_text()
-
-kwargs = {
-    'name': 'openmc-plotter',
-    'version': version,
-    'packages': ['openmc_plotter'],
-    'package_data': {'openmc_plotter' : ['assets/*.png']},
-    'entry_points': {
-        'console_scripts': [
-            'openmc-plotter=openmc_plotter.__main__:main'
-        ]
-    },
-
-    # Metadata
-    'author': 'OpenMC Development Team',
-    'author_email': 'openmc@anl.gov',
-    'description': 'Plotting tool for OpenMC models and tally data',
-    'long_description': long_description,
-    'long_description_content_type': 'text/markdown',
-    'url': 'https://github.com/openmc-dev/plotter',
-    'download_url': 'https://github.com/openmc-dev/plotter',
-    'project_urls': {
-        'Issue Tracker': 'https://github.com/openmc-dev/plotter/issues',
-        'Source Code': 'https://github.com/openmc-dev/plotter',
-    },
-    'classifiers': [
-        'Development Status :: 4 - Beta',
-        'Intended Audience :: Developers',
-        'Intended Audience :: End Users/Desktop',
-        'Intended Audience :: Science/Research',
-        'Natural Language :: English',
-        'Topic :: Scientific/Engineering',
-        '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',
-    ],
-
-    # Dependencies
-    'python_requires': '>=3.8',
-    'install_requires': [
-        'openmc>0.14.0', 'numpy', 'matplotlib', 'PySide6'
-    ],
-    'extras_require': {
-        'test' : ['pytest', 'pytest-qt'],
-        'vtk' : ['vtk']
-    },
-}
-
-setup(**kwargs)