diff --git a/metis_wizard/__init__.py b/metis_wizard/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/metis_wizard.py b/metis_wizard/metis_wizard.py
similarity index 93%
rename from metis_wizard.py
rename to metis_wizard/metis_wizard.py
index b5512d0..440b81a 100644
--- a/metis_wizard.py
+++ b/metis_wizard/metis_wizard.py
@@ -5,6 +5,7 @@
 scales to approximately 300 cores. See the notes in the ``fesom`` documentation <https://readthedocs.org/fesom/> for more information. 
 """
 
+import importlib.resources as pkg_resources
 import pathlib
 import shutil
 import subprocess
@@ -85,7 +86,6 @@ class MetisPartitioner:
     """
 
     _BIN = "fesom_ini"
-    _NML = "namelist.config"
 
     def __init__(self, bin: str = None) -> None:
         """
@@ -111,7 +111,7 @@ def partition_mesh(self, mesh: FesomMesh, n_part: int = 288) -> None:
         n_part (int, optional): The number of partitions. Defaults to 288.
         """
         # Create the namelist:
-        nml = prepare_namelist(self._NML, mesh, n_part)
+        nml = prepare_namelist(mesh, n_part)
         # Write the namelist:
         nml.write("namelist.config", force=True)
         logger.info(f"Namelist written for {self.bin}.")
@@ -121,21 +121,26 @@ def partition_mesh(self, mesh: FesomMesh, n_part: int = 288) -> None:
         logger.success(f"Mesh partitioned with {self.bin} for {n_part}.")
 
 
-def prepare_namelist(nml_path: str or pathlib.Path, mesh: FesomMesh, n_part: int = 288):
+def read_namelist_config():
+    with pkg_resources.open_text("metis_wizard", "namelist.config") as file:
+        data = file.read()
+    return data
+
+
+def prepare_namelist(mesh: FesomMesh, n_part: int = 288):
     """
     This function prepares the METIS namelist file for partitioning.
 
     Parameters:
     -----------
-    nml_path (str): The path to the namelist file.
     n_part (int, optional): The number of partitions. Defaults to 288.
 
     Returns:
     --------
     MetisNamelist object: The METIS namelist object.
     """
-    with open(nml_path, "r") as f:
-        nml = MetisNamelist(f90nml.read(f))
+    f = read_namelist_config()
+    nml = MetisNamelist(f90nml.reads(f))
     nml.set_mesh(mesh.path)
     nml.set_partitioning(n_part)
     return nml
diff --git a/namelist.config b/metis_wizard/namelist.config
similarity index 100%
rename from namelist.config
rename to metis_wizard/namelist.config
diff --git a/pyproject.toml b/pyproject.toml
index 4b39783..4fe98ac 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,18 +4,21 @@ version = "1.0.0"
 description = ""
 authors = ["Paul Gierz <pgierz@awi.de>"]
 readme = "README.md"
+include = ["metis_wizard/namelist.config"]
+packages = [
+    { include = "metis_wizard", from = "." }
+]
+
 
 [tool.poetry.dependencies]
 f90nml = "^1.4.4"
 rich-click = "^1.8.3"
 click-loguru = "^1.3.8"
 questionary = "^2.0.1"
-
 click = "^8.1.7"
 
 [tool.poetry.scripts]
-metis-wizard = "metis_wizard:main"
-
+metis-wizard = "metis_wizard.metis_wizard:main"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.2.2"