diff --git a/dev-requirements.txt b/dev-requirements.txt
index 0c851ba..48ce72e 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -36,9 +36,7 @@ click==8.1.7
     #   pip-tools
     #   pynxtools
 cloudpickle==3.0.0
-    # via
-    #   dask
-    #   hyperspy
+    # via dask
 comm==0.2.1
     # via ipykernel
 contourpy==1.2.0
@@ -47,12 +45,10 @@ cycler==0.12.1
     # via matplotlib
 dask[array]==2024.2.0
     # via
-    #   dask
     #   hyperspy
     #   kikuchipy
     #   orix
     #   pyxem
-    #   rosettasciio
 debugpy==1.8.1
     # via ipykernel
 decorator==5.1.1
@@ -112,7 +108,6 @@ h5py==3.10.0
     #   pynxtools
     #   pynxtools-mpes (pyproject.toml)
     #   pyxem
-    #   rosettasciio
     #   silx
 hdf5plugin==4.4.0
     # via fabio
@@ -280,7 +275,6 @@ numpy==1.26.4
     #   pynxtools
     #   pyxem
     #   radioactivedecay
-    #   rosettasciio
     #   scikit-image
     #   scikit-learn
     #   scipy
@@ -330,9 +324,7 @@ pillow==10.0.1
     #   nionswift
     #   scikit-image
 pint==0.23
-    # via
-    #   hyperspy
-    #   rosettasciio
+    # via hyperspy
 pip-tools==7.4.0
     # via pynxtools-mpes (pyproject.toml)
 platformdirs==4.2.0
@@ -346,7 +338,6 @@ ply==3.11
     # via pycifrw
 pooch==1.8.0
     # via
-    #   hyperspy
     #   kikuchipy
     #   orix
 prettytable==3.10.0
@@ -390,7 +381,6 @@ python-dateutil==2.8.2
     #   jupyter-client
     #   matplotlib
     #   pandas
-    #   rosettasciio
 pytz==2024.1
     # via
     #   nionswift
@@ -407,7 +397,6 @@ pyyaml==6.0.1
     #   kikuchipy
     #   pynxtools
     #   pynxtools-mpes (pyproject.toml)
-    #   rosettasciio
 pyzmq==25.1.2
     # via
     #   ipykernel
@@ -423,7 +412,7 @@ requests==2.31.0
     #   requests-cache
 requests-cache==1.2.0
     # via pynxtools
-ruff==0.2.2
+ruff==0.3.4
     # via pynxtools-mpes (pyproject.toml)
 scikit-image==0.22.0
     # via
diff --git a/pyproject.toml b/pyproject.toml
index 4da5418..a7e28a2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "mypy",
-    "ruff",
+    "ruff==0.3.4",
     "pytest",
     "types-pyyaml",
     "pip-tools",
@@ -51,7 +51,12 @@ version_scheme = "no-guess-dev"
 local_scheme = "node-and-date"
 
 [tool.ruff]
-include = ["pynxtools_mpes/*.py", "tests/*.py"]
+include = ["pynxtools/*.py", "tests/*.py"]
+exclude = ["pynxtools/definitions"]
+line-length = 88
+indent-width = 4
+
+[tool.ruff.lint]
 select = [
     "E", # pycodestyle
     "W", # pycodestyle
@@ -74,6 +79,12 @@ ignore = [
 ]
 fixable = ["ALL"]
 
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+skip-magic-trailing-comma = false
+line-ending = "auto"
+
 [tool.mypy]
 strict = false
 ignore_missing_imports = true