diff --git a/CMake/vtkVersion.cmake b/CMake/vtkVersion.cmake
index 1bf71aff439b7d3ae8d96e555515a7288039e28b..217b80f6a183a20eb7eb05f9b3c81fe70a8b9a9f 100644
--- a/CMake/vtkVersion.cmake
+++ b/CMake/vtkVersion.cmake
@@ -1,7 +1,7 @@
 # VTK version number components.
 set(VTK_MAJOR_VERSION 9)
 set(VTK_MINOR_VERSION 0)
-set(VTK_BUILD_VERSION 20210427)
+set(VTK_BUILD_VERSION 20210428)
 
 if (NOT VTK_MINOR_VERSION LESS 100)
   message(FATAL_ERROR