diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000000000000000000000000000000000000..174965a1b735d4e3e76bd9d3b304bd781ca9eabd
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,2 @@
+[build-system]
+requires = ["cython", "numpy", "setuptools", "wheel"]
\ No newline at end of file
diff --git a/setup.py b/setup.py
index a39645c9b9e25b7f80b269f591502079edbb22ef..2fb68ecf3fa89a0dfc9f749d9870bd1cf1f5812d 100644
--- a/setup.py
+++ b/setup.py
@@ -50,12 +50,13 @@ setup(
 
     python_requires='>=3.8',
     install_requires=[
+        'packaging',
         'h5py',
         'extra_data',
     ],
     extras_require={
         'glance': ['uniplot'],
-        'test': ['pytest',],
+        'test': ['pytest'],
     },
 
     classifiers=[
diff --git a/src/exdf/cli/__init__.py b/src/exdf/cli/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391