diff --git a/src/cell_volume_methods/alpha_shapes/config.vsh.yaml b/src/cell_volume_methods/alpha_shapes/config.vsh.yaml
index 47d5ceab..f71bceac 100644
--- a/src/cell_volume_methods/alpha_shapes/config.vsh.yaml
+++ b/src/cell_volume_methods/alpha_shapes/config.vsh.yaml
@@ -14,7 +14,7 @@ arguments:
   - name: --output
     required: true
     direction: output
-    __merge__: /src/api/file_spatialdata_assigned.yaml
+    __merge__: /src/api/file_cell_volumes.yaml
 
 resources:
   - type: python_script
diff --git a/src/normalisation_methods/normalise_by_volume/config.vsh.yaml b/src/normalisation_methods/normalise_by_volume/config.vsh.yaml
index d7000b18..9f9e1906 100644
--- a/src/normalisation_methods/normalise_by_volume/config.vsh.yaml
+++ b/src/normalisation_methods/normalise_by_volume/config.vsh.yaml
@@ -10,6 +10,7 @@ arguments:
     type: file
     description: H5ad with an obs column of cell volumes calculated from spatial transcriptomics data.
     required: true
+    __merge__: /src/api/file_cell_volumes.yaml
   - name: --output
     required: true
     direction: output