diff --git a/pyproject.toml b/pyproject.toml
index 96b7035..f015c1e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,7 @@ dependencies = [
     "nqrduck",
     "nqrduck-pulseprogrammer",
     "nqrduck-spectrometer",
+    "quackseq",
 ]
 
 [project.optional-dependencies]
diff --git a/src/nqrduck_measurement/controller.py b/src/nqrduck_measurement/controller.py
index 8c0e49c..2f513d0 100644
--- a/src/nqrduck_measurement/controller.py
+++ b/src/nqrduck_measurement/controller.py
@@ -4,9 +4,11 @@ import logging
 import json
 from PyQt6.QtCore import pyqtSlot, pyqtSignal
 from PyQt6.QtWidgets import QApplication
-from .signalprocessing_options import Apodization, Fitting
+
 from nqrduck.module.module_controller import ModuleController
-from nqrduck_spectrometer.measurement import Measurement
+from quackseq.measurement import Measurement
+
+from .signalprocessing_options import Apodization, Fitting
 
 logger = logging.getLogger(__name__)
 
@@ -231,7 +233,7 @@ class MeasurementController(ModuleController):
 
         self.module.model.displayed_measurement = apodized_measurement
         self.module.model.add_measurement(apodized_measurement)
-    
+
     def show_fitting_dialog(self) -> None:
         """Show fitting dialog."""
         logger.debug("Showing fitting dialog.")
diff --git a/src/nqrduck_measurement/model.py b/src/nqrduck_measurement/model.py
index 9ba0e56..28e1497 100644
--- a/src/nqrduck_measurement/model.py
+++ b/src/nqrduck_measurement/model.py
@@ -2,7 +2,7 @@
 
 import logging
 from PyQt6.QtCore import pyqtSignal
-from nqrduck_spectrometer.measurement import Measurement
+from quackseq.measurement import Measurement
 from nqrduck.module.module_model import ModuleModel
 
 logger = logging.getLogger(__name__)
diff --git a/src/nqrduck_measurement/signalprocessing_options.py b/src/nqrduck_measurement/signalprocessing_options.py
index 4768e5c..09905c6 100644
--- a/src/nqrduck_measurement/signalprocessing_options.py
+++ b/src/nqrduck_measurement/signalprocessing_options.py
@@ -2,8 +2,8 @@
 
 import logging
 import sympy
-from nqrduck_spectrometer.measurement import Measurement, Fit, T2StarFit, LorentzianFit
-from nqrduck.helpers.functions import Function, GaussianFunction, CustomFunction
+from quackseq.measurement import Measurement, Fit, T2StarFit, LorentzianFit
+from quackseq.functions import Function, GaussianFunction, CustomFunction
 from nqrduck.helpers.formbuilder import (
     DuckFormBuilder,
     DuckFormFunctionSelectionField,