diff --git a/src/trackers.py b/src/trackers.py
index 119179cc3815161e8e3332b005d095f59ce07947..963b879db497bca1684719f61c87afc4b4c4a9b2 100644
--- a/src/trackers.py
+++ b/src/trackers.py
@@ -245,10 +245,8 @@ class GNN():
         """Associates measurements to tracks and updates the tracks with the
         measurements.
 
-        Does *not* return anything, but modifies the objects in-place!
-        Uses Efficient Hypothesis Management (see
-        https://github.com/sglvladi/pyehm) for computing the hypothesis
-        probabilities.
+        Does *not* return anything, but modifies the objects in-place! Uses
+        scipy to compute the optimal assignment.
 
         Parameters
         ----------