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/pynxtools_mpes/reader.py b/pynxtools_mpes/reader.py
index 003fb77..c13b783 100644
--- a/pynxtools_mpes/reader.py
+++ b/pynxtools_mpes/reader.py
@@ -16,6 +16,7 @@
 # limitations under the License.
 #
 """MPES reader implementation for the DataConverter."""
+
 import errno
 import os
 from functools import reduce
@@ -181,7 +182,9 @@ def iterate_dictionary(dic, key_string):
     "momentum_resolution": "RESOLUTION[momentum_resolution]/resolution",
     "temporal_resolution": "RESOLUTION[temporal_resolution]/resolution",
     "spatial_resolution": "RESOLUTION[spatial_resolution]/resolution",
+    "angular_resolution": "RESOLUTION[angular_resolution]/resolution",
     "sample_temperature": "temperature_sensor/value",
+    "drain_current": "drain_current_amperemeter/value",
 }
 
 REPLACE_NESTED = {
@@ -191,12 +194,18 @@ def iterate_dictionary(dic, key_string):
     "beam_TYPE[beam]/Probe": "beam_TYPE[beam_probe]",
     "beam_TYPE[beam]/Pump": "beam_TYPE[beam_pump]",
     "sample_history": "sample_history/notes",
+    "ELECTRONANALYSER[electronanalyser]/RESOLUTION[energy_resolution]": (
+        "ELECTRONANALYSER[electronanalyser]/energy_resolution"
+    ),
     "ELECTRONANALYSER[electronanalyser]/RESOLUTION[momentum_resolution]": (
         "ELECTRONANALYSER[electronanalyser]/momentum_resolution"
     ),
     "ELECTRONANALYSER[electronanalyser]/RESOLUTION[spatial_resolution]": (
         "ELECTRONANALYSER[electronanalyser]/spatial_resolution"
     ),
+    "ELECTRONANALYSER[electronanalyser]/RESOLUTION[angular_resolution]": (
+        "ELECTRONANALYSER[electronanalyser]/angular_resolution"
+    ),
     "SAMPLE[sample]/gas_pressure": "INSTRUMENT[instrument]/pressure_gauge/value",
     "SAMPLE[sample]/temperature": (
         "INSTRUMENT[instrument]/MANIPULATOR[manipulator]/temperature_sensor/value"
diff --git a/pyproject.toml b/pyproject.toml
index 9fb1470..a3cd6be 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",
@@ -55,6 +55,10 @@ local_scheme = "node-and-date"
 
 [tool.ruff]
 include = ["pynxtools_mpes/*.py", "tests/*.py"]
+line-length = 88
+indent-width = 4
+
+[tool.ruff.lint]
 select = [
     "E", # pycodestyle
     "W", # pycodestyle
@@ -77,6 +81,12 @@ 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
diff --git a/tests/test_reader.py b/tests/test_reader.py
index f036282..59e235a 100644
--- a/tests/test_reader.py
+++ b/tests/test_reader.py
@@ -1,6 +1,7 @@
 """
 Basic example based test for the stm reader
 """
+
 import logging
 import os
 import xml.etree.ElementTree as ET