diff --git a/series b/series
index d9194a5..5ee56d7 100644
--- a/series
+++ b/series
@@ -45,4 +45,5 @@ issue5828-product.diff
 
 locale.diff
 
-issue5917.diff # [tryton] - Reduce the number of request for tree_state (changeset 33c1a31d27bc) 
+issue5917.diff # [tryton] - Reduce the number of request for tree_state (changeset 33c1a31d27bc)
+issue5877.diff # [trytond] - Improve ModelStorage.search_count by using no order and COUNT(*) (changeset a2009809c10f)