diff --git a/.github/workflows/pipeline.yml b/.github/workflows/pipeline.yml
index f92b02a..fe6381a 100644
--- a/.github/workflows/pipeline.yml
+++ b/.github/workflows/pipeline.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.11", "3.12", "3.13", "3.14"]
     steps:
     - uses: actions/checkout@v6
     - name: Set up Python ${{ matrix.python-version }}
@@ -29,14 +29,14 @@ jobs:
         flake8 . --count --exit-zero --statistics
     - name: Run tests
       run: |
-        pytest --cov=./detl --cov-report xml --cov-report term-missing tests/
+        pytest -v --cov=./detl --cov-report xml --cov-report term-missing tests/
     - name: Upload coverage
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         file: ./coverage.xml
     - name: Test Wheel install and import
       run: |
-        python setup.py bdist_wheel
+        python -m build
         cd dist
         pip install detl*.whl
         python -c "import detl; print(detl.__version__)"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3f2b44d..ea6a4e2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,17 +16,17 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: 3.9
+        python-version: "3.13"
     - name: Install dependencies
       run: |
         pip install -e .
-        pip install flake8 pytest pytest-cov twine wheel
+        pip install flake8 pytest pytest-cov twine build
     - name: Test with pytest
       run: |
-        pytest --cov=./detl --cov-report xml --cov-report term-missing tests/
+        pytest -v --cov=./detl --cov-report xml --cov-report term-missing tests/
     - name: Build package
       run: |
-        python setup.py sdist bdist_wheel
+        python -m build
     - name: Check version number match
       run: |
         echo "GITHUB_REF: ${GITHUB_REF}"
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ae3aadd..9af3eec 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,7 +3,7 @@
 exclude: testfiles/|\.(csv|ipynb)$
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.5.0
+  rev: v6.0.0
   hooks:
     - id: check-merge-conflict
     - id: check-toml
@@ -11,11 +11,11 @@ repos:
     - id: end-of-file-fixer
     - id: trailing-whitespace
 - repo: https://github.com/PyCQA/isort
-  rev: 5.12.0
+  rev: 8.0.1
   hooks:
     - id: isort
       name: isort
 - repo: https://github.com/psf/black
-  rev: 23.11.0
+  rev: 26.3.1
   hooks:
     - id: black
diff --git a/detl/__init__.py b/detl/__init__.py
index fc6a0c4..40aa602 100644
--- a/detl/__init__.py
+++ b/detl/__init__.py
@@ -1,7 +1,9 @@
+import importlib.metadata
+
 from . import parsing
 from .core import DASwareParser, DASwareVersion, DWData
 
-__version__ = "1.1.3"
+__version__ = importlib.metadata.version(__package__ or __name__)
 
 parsers = {
     DASwareVersion.V4: parsing.dw4.DASware4Parser,
diff --git a/detl/core.py b/detl/core.py
index 6744163..0ac2d3f 100644
--- a/detl/core.py
+++ b/detl/core.py
@@ -1,4 +1,5 @@
 """Specifies the base types for parsing and representing DASware data."""
+
 import abc
 import enum
 import pathlib
diff --git a/detl/parsing/common.py b/detl/parsing/common.py
index 1801691..97a5a0d 100644
--- a/detl/parsing/common.py
+++ b/detl/parsing/common.py
@@ -158,6 +158,6 @@ def transform_trackdata(
         if (not new_data.empty) and (not new_data.isnull().all()):
             transformed_data.loc[:, key] = new_data
 
-    transformed_data = transformed_data.fillna(method="ffill")
+    transformed_data = transformed_data.ffill()
 
     return transformed_data
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 364ab4a..f608d45 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,4 +2,3 @@ sphinx
 sphinx_rtd_theme
 numpydoc
 nbsphinx
-nbsphinx_link
diff --git a/docs/source/01_Basic_Use.nblink b/docs/source/01_Basic_Use.nblink
deleted file mode 100644
index 8f6846e..0000000
--- a/docs/source/01_Basic_Use.nblink
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    "path": "../../notebooks/01_Basic_Use.ipynb"
-}
diff --git a/docs/source/02_Closest_Point_Lookup.nblink b/docs/source/02_Closest_Point_Lookup.nblink
deleted file mode 100644
index 449fb48..0000000
--- a/docs/source/02_Closest_Point_Lookup.nblink
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    "path": "../../notebooks/02_Closest_Point_Lookup.ipynb"
-}
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 624f9c1..e3f9c4f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -37,7 +37,6 @@
     "sphinx_rtd_theme",
     "numpydoc",
     "nbsphinx",
-    "nbsphinx_link",
 ]
 
 # Add any paths that contain templates here, relative to this directory.
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 45a687d..bc2ed66 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -15,8 +15,8 @@ In the following chapters, we introduce the data structures, basic functions and
    :maxdepth: 2
    :caption: Examples
 
-   01_Basic_Use
-   02_Closest_Point_Lookup
+   notebooks/01_Basic_Use
+   notebooks/02_Closest_Point_Lookup
 
 
 You can find auto-generated API documentation below:
diff --git a/notebooks/01_Basic_Use.ipynb b/docs/source/notebooks/01_Basic_Use.ipynb
similarity index 100%
rename from notebooks/01_Basic_Use.ipynb
rename to docs/source/notebooks/01_Basic_Use.ipynb
diff --git a/notebooks/02_Closest_Point_Lookup.ipynb b/docs/source/notebooks/02_Closest_Point_Lookup.ipynb
similarity index 100%
rename from notebooks/02_Closest_Point_Lookup.ipynb
rename to docs/source/notebooks/02_Closest_Point_Lookup.ipynb
diff --git a/notebooks/README.md b/notebooks/README.md
new file mode 100644
index 0000000..f629e89
--- /dev/null
+++ b/notebooks/README.md
@@ -0,0 +1,5 @@
+# Notebooks Moved
+
+Visit [docs/source/notebooks](../docs/source/notebooks).
+
+Or visit https://detl.readthedocs.io.
diff --git a/pyproject.toml b/pyproject.toml
index 1de3c8b..bf090ad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,54 @@
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "detl"
+version = "1.2.0"
+description = "Package for parsing and transforming DASware raw data exports."
+readme = "README.md"
+requires-python = ">=3.11"
+license = "AGPL-3.0-or-later"
+authors = [
+    {name = "Michael Osthege", email = "m.osthege@fz-juelich.de"},
+    {name = "Niklas Tenhaef", email = "n.tenhaef@fz-juelich.de"},
+    {name = "Valentin Steier", email = "v.steier@fz-juelich.de"},
+]
+classifiers = [
+    "Programming Language :: Python",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
+    "Intended Audience :: Science/Research",
+    "Topic :: Scientific/Engineering",
+]
+dependencies = [
+    "numpy",
+    "pandas",
+    "pytz",
+]
+
+[project.urls]
+Homepage = "https://github.com/jubiotech/detl"
+Documentation = "https://detl.readthedocs.io/en/latest/"
+Download = "https://pypi.org/project/detl/"
+
+[tool.setuptools]
+package-dir = {"detl" = "detl"}
+
+[tool.setuptools.package-data]
+"detl" = ["py.typed"]
+
 [tool.black]
 line-length = 100
 
 [tool.isort]
 profile = "black"
+
+[tool.mypy]
+ignore_missing_imports = true
+exclude = [
+    'test_.*?\.py$',
+]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 3b349c2..86b6e83 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,7 @@
+build
 flake8
+pandas>=3.0.0
 pytest
 pytest-cov
 twine
-wheel
 watermark
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 5da331c..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-numpy
-pandas
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 07702c1..0000000
--- a/setup.py
+++ /dev/null
@@ -1,43 +0,0 @@
-import pathlib
-
-import setuptools
-
-__packagename__ = "detl"
-ROOT = pathlib.Path(__file__).parent
-
-
-def get_version():
-    import os
-    import re
-
-    VERSIONFILE = os.path.join(__packagename__, "__init__.py")
-    initfile_lines = open(VERSIONFILE, "rt").readlines()
-    VSRE = r"^__version__ = ['\"]([^'\"]*)['\"]"
-    for line in initfile_lines:
-        mo = re.search(VSRE, line, re.M)
-        if mo:
-            return mo.group(1)
-    raise RuntimeError("Unable to find version string in %s." % (VERSIONFILE,))
-
-
-__version__ = get_version()
-
-
-setuptools.setup(
-    name=__packagename__,
-    packages=setuptools.find_packages(),  # this must be the same as the name above
-    version=__version__,
-    description="Package for parsing and transforming DASware raw data exports.",
-    url="https://github.com/JuBiotech/detl",
-    author="IBG-1",
-    copyright="(c) 2022 Forschungszentrum Jülich GmbH",
-    license="GNU Affero General Public License v3.0",
-    classifiers=[
-        "Programming Language :: Python",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3.8",
-        "Intended Audience :: Science/Research",
-        "License :: OSI Approved :: GNU Affero General Public License v3",
-    ],
-    install_requires=open(pathlib.Path(ROOT, "requirements.txt")).readlines(),
-)
diff --git a/tests/test_detl.py b/tests/test_detl.py
index f3f769d..43d1772 100644
--- a/tests/test_detl.py
+++ b/tests/test_detl.py
@@ -1,4 +1,5 @@
 """Contains unit tests for the `detl` package"""
+
 import datetime
 import pathlib
 import unittest