diff --git a/include/emqx_release.hrl b/include/emqx_release.hrl
index 36d1fa5d3..da045e4a5 100644
--- a/include/emqx_release.hrl
+++ b/include/emqx_release.hrl
@@ -29,7 +29,7 @@
 
 -ifndef(EMQX_ENTERPRISE).
 
--define(EMQX_RELEASE, {opensource, "4.3.21-alpha.2"}).
+-define(EMQX_RELEASE, {opensource, "4.3.21-alpha.3"}).
 
 -else.