diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index fd5ba345..412fd341 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,5 +1,5 @@
 {% set version = "8.1.0" %}
-{% set build_number = 3 %}
+{% set build_number = 4 %}
 {% set minor_version = ".".join(version.split(".")[:2]) %}
 
 {% set build_number = build_number + 200 %}   # [not VTK_WITH_OSMESA]