diff --git a/docs/src/APIs/BalanceLaws/BalanceLaws.md b/docs/src/APIs/BalanceLaws/BalanceLaws.md
index e4fd778d231..127bb0d3671 100644
--- a/docs/src/APIs/BalanceLaws/BalanceLaws.md
+++ b/docs/src/APIs/BalanceLaws/BalanceLaws.md
@@ -60,6 +60,7 @@ transform_post_gradient_laplacian!
 ```@docs
 wavespeed
 boundary_state!
+nodal_update_auxiliary_state!
 update_auxiliary_state!
 update_auxiliary_state_gradient!
 ```