diff --git a/requirements.txt b/requirements.txt
index 48487da..36abd26 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,4 +11,5 @@ matplotlib
 ipykernel
 jupytext
 cellpose
-dlmbl_unet @ git+https://github.com/dlmbl/dlmbl-unet
\ No newline at end of file
+dlmbl_unet @ git+https://github.com/dlmbl/dlmbl-unet
+mwatershed
\ No newline at end of file