diff --git a/conda/napari_cellseg3d_m1.yml b/conda/napari_cellseg3d_m1.yml
index d901c429..fb075877 100644
--- a/conda/napari_cellseg3d_m1.yml
+++ b/conda/napari_cellseg3d_m1.yml
@@ -6,6 +6,7 @@ channels:
 dependencies:
     - python=3.8
     - pip
+    - itk
     - pip:
         - numpy
         - napari>=0.4.14