diff --git a/src/spikeinterface/generation/drifting_generator.py b/src/spikeinterface/generation/drifting_generator.py
index b439c57c52..d355b1b3fb 100644
--- a/src/spikeinterface/generation/drifting_generator.py
+++ b/src/spikeinterface/generation/drifting_generator.py
@@ -141,8 +141,15 @@ def make_one_displacement_vector(
             else:
                 displacement_vector[ind0:ind1] = -0.5
 
+    elif drift_mode == "slope":
+
+        slope = np.linspace(0, 1, end_drift_index - start_drift_index)  # TODO: check amplitude
+
+        displacement_vector[start_drift_index:end_drift_index] = slope
+        displacement_vector[end_drift_index:] = slope[-1]
+
     else:
-        raise ValueError("drift_mode must be 'zigzag' or 'bump'")
+        raise ValueError("drift_mode must be 'zigzag', 'bump' or 'slope'")
 
     return displacement_vector * amplitude_factor