diff --git a/src/nomad_simulations/outputs.py b/src/nomad_simulations/outputs.py
index 07e26b40..388e6504 100644
--- a/src/nomad_simulations/outputs.py
+++ b/src/nomad_simulations/outputs.py
@@ -23,10 +23,10 @@
 from nomad.metainfo import Quantity, SubSection
 from nomad.datamodel.metainfo.annotations import ELNAnnotation
 
-from .model_system import ModelSystem
-from .physical_property import PhysicalProperty
-from .numerical_settings import SelfConsistency
-from .properties import (
+from nomad_simulations.model_system import ModelSystem
+from nomad_simulations.physical_property import PhysicalProperty
+from nomad_simulations.numerical_settings import SelfConsistency
+from nomad_simulations.properties import (
     FermiLevel,
     ChemicalPotential,
     CrystalFieldSplitting,
diff --git a/src/nomad_simulations/physical_property.py b/src/nomad_simulations/physical_property.py
index 0f908ac4..39c1d926 100644
--- a/src/nomad_simulations/physical_property.py
+++ b/src/nomad_simulations/physical_property.py
@@ -35,8 +35,8 @@
 from nomad.metainfo.metainfo import DirectQuantity, Dimension, _placeholder_quantity
 from nomad.datamodel.metainfo.basesections import Entity
 
-from .variables import Variables
-from .numerical_settings import SelfConsistency
+from nomad_simulations.variables import Variables
+from nomad_simulations.numerical_settings import SelfConsistency
 
 
 # We add `logger` for the `PhysicalProperty.variables_shape` method
diff --git a/src/nomad_simulations/properties/band_gap.py b/src/nomad_simulations/properties/band_gap.py
index 0656197a..6245bc63 100644
--- a/src/nomad_simulations/properties/band_gap.py
+++ b/src/nomad_simulations/properties/band_gap.py
@@ -23,7 +23,7 @@
 
 from nomad.metainfo import Quantity, MEnum, Section, Context
 
-from ..physical_property import PhysicalProperty
+from nomad_simulations.physical_property import PhysicalProperty
 
 
 class ElectronicBandGap(PhysicalProperty):
diff --git a/src/nomad_simulations/properties/energies.py b/src/nomad_simulations/properties/energies.py
index 8d8209a3..3283a1f8 100644
--- a/src/nomad_simulations/properties/energies.py
+++ b/src/nomad_simulations/properties/energies.py
@@ -20,7 +20,7 @@
 
 from nomad.metainfo import Quantity, Section, Context
 
-from ..physical_property import PhysicalProperty
+from nomad_simulations.physical_property import PhysicalProperty
 
 
 class FermiLevel(PhysicalProperty):
diff --git a/src/nomad_simulations/properties/hopping_matrix.py b/src/nomad_simulations/properties/hopping_matrix.py
index 7eb6713d..57652eb0 100644
--- a/src/nomad_simulations/properties/hopping_matrix.py
+++ b/src/nomad_simulations/properties/hopping_matrix.py
@@ -20,7 +20,7 @@
 
 from nomad.metainfo import Quantity, Section, Context
 
-from ..physical_property import PhysicalProperty
+from nomad_simulations.physical_property import PhysicalProperty
 
 
 class HoppingMatrix(PhysicalProperty):
diff --git a/src/nomad_simulations/properties/spectral_profile.py b/src/nomad_simulations/properties/spectral_profile.py
index ddfcfaa6..9b11d94e 100644
--- a/src/nomad_simulations/properties/spectral_profile.py
+++ b/src/nomad_simulations/properties/spectral_profile.py
@@ -24,11 +24,11 @@
 from nomad import config
 from nomad.metainfo import Quantity, SubSection, Section, Context, MEnum
 
-from ..utils import get_sibling_section, get_variables
-from ..physical_property import PhysicalProperty
-from ..variables import Energy2 as Energy
-from ..atoms_state import AtomsState, OrbitalsState
-from .band_gap import ElectronicBandGap
+from nomad_simulations.utils import get_sibling_section, get_variables
+from nomad_simulations.physical_property import PhysicalProperty
+from nomad_simulations.variables import Energy2 as Energy
+from nomad_simulations.atoms_state import AtomsState, OrbitalsState
+from nomad_simulations.properties.band_gap import ElectronicBandGap
 
 
 class SpectralProfile(PhysicalProperty):