diff --git a/soliket/gaussian/gaussian_data.py b/soliket/gaussian/gaussian_data.py
index 225cab0e..aa98b99b 100644
--- a/soliket/gaussian/gaussian_data.py
+++ b/soliket/gaussian/gaussian_data.py
@@ -1,6 +1,6 @@
 from typing import Optional, Sequence
 import numpy as np
-from cobaya.likelihoods.base_classes.DataSetLikelihood import _fast_chi_square
+from cobaya.likelihoods.base_classes import _fast_chi_square
 
 
 class GaussianData: