diff --git a/py-polars/polars/functions/aggregation/__init__.py b/py-polars/polars/functions/aggregation/__init__.py
index 1f90fab13e68a..f92068adeb5b1 100644
--- a/py-polars/polars/functions/aggregation/__init__.py
+++ b/py-polars/polars/functions/aggregation/__init__.py
@@ -3,9 +3,9 @@
     any_horizontal,
     cumsum_horizontal,
     max_horizontal,
+    mean_horizontal,
     min_horizontal,
     sum_horizontal,
-    mean_horizontal,
 )
 from polars.functions.aggregation.vertical import all, any, cumsum, max, min, sum
 
@@ -22,4 +22,5 @@
     "max_horizontal",
     "min_horizontal",
     "sum_horizontal",
+    "mean_horizontal",
 ]