diff --git a/doc/modules/classes.rst b/doc/modules/classes.rst
index 46b6ba2028b7304e063c6eeeb28288cf9abe16df..5399e27ef4d088c27a3d478dcd634dd184885c3f 100644
--- a/doc/modules/classes.rst
+++ b/doc/modules/classes.rst
@@ -1014,6 +1014,7 @@ See the :ref:`metrics` section of the user guide for further details.
 
     multioutput.MultiOutputRegressor
     multioutput.MultiOutputClassifier
+    multioutput.ClassifierChain
 
 .. _naive_bayes_ref: