diff --git a/openeo_processes_dask/process_implementations/ml/curve_fitting.py b/openeo_processes_dask/process_implementations/ml/curve_fitting.py
index ac13b9ca..81736ea7 100644
--- a/openeo_processes_dask/process_implementations/ml/curve_fitting.py
+++ b/openeo_processes_dask/process_implementations/ml/curve_fitting.py
@@ -75,6 +75,7 @@ def predict_curve(
     function: Callable,
     dimension: str,
     labels: ArrayLike,
+    data: RasterCube = None,
 ):
     labels_were_datetime = False
     dims_before = list(parameters.dims)
diff --git a/openeo_processes_dask/specs/openeo-processes b/openeo_processes_dask/specs/openeo-processes
index ad4be393..730c13c5 160000
--- a/openeo_processes_dask/specs/openeo-processes
+++ b/openeo_processes_dask/specs/openeo-processes
@@ -1 +1 @@
-Subproject commit ad4be3937b799a42c291fa3ad1d87572f4bcd026
+Subproject commit 730c13c50fa9b0e3bd9525f950dc82bbe2799329