diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50679ff4..5b3ced9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## vx.x.x
+- Fix bug with setInputAsNumpy() using deprecated `numpy2vtkImporter` in `CILViewer2D` - now uses `numpy2vtkImage`
+
 ## v23.1.0
 - Raise error if try to add multiple widgets with the same name to CILViewer or CILViewer2D.
 - Adds the following base classes to `ui.main_windows.py`:
diff --git a/Wrappers/Python/ccpi/viewer/CILViewer2D.py b/Wrappers/Python/ccpi/viewer/CILViewer2D.py
index e2cc5f4f..a9d0068f 100644
--- a/Wrappers/Python/ccpi/viewer/CILViewer2D.py
+++ b/Wrappers/Python/ccpi/viewer/CILViewer2D.py
@@ -1171,13 +1171,12 @@ def setInputAsNumpy(self,
                         dtype=vtk.VTK_UNSIGNED_SHORT):
         self.rescale[0] = rescale
 
-        importer = Converter.numpy2vtkImporter(numpyarray, spacing, origin)
-        importer.Update()
+        img = Converter.numpy2vtkImage(numpyarray, spacing, origin)
 
         if rescale:
             # rescale to appropriate VTK_UNSIGNED_SHORT
             stats = vtk.vtkImageAccumulate()
-            stats.SetInputData(importer.GetOutput())
+            stats.SetInputData(img)
             stats.Update()
             iMin = stats.GetMin()[0]
             iMax = stats.GetMax()[0]
@@ -1191,14 +1190,14 @@ def setInputAsNumpy(self,
 
             self.rescale[1] = (scale, -iMin)
             shiftScaler = vtk.vtkImageShiftScale()
-            shiftScaler.SetInputData(importer.GetOutput())
+            shiftScaler.SetInputData(img)
             shiftScaler.SetScale(scale)
             shiftScaler.SetShift(-iMin)
             shiftScaler.SetOutputScalarType(dtype)
             shiftScaler.Update()
             self.img3D = shiftScaler.GetOutput()
         else:
-            self.img3D = importer.GetOutput()
+            self.img3D = img
 
         self.installPipeline()