diff --git a/apps/emqx/src/emqx.app.src b/apps/emqx/src/emqx.app.src
index d2831b74d..1cecd7b61 100644
--- a/apps/emqx/src/emqx.app.src
+++ b/apps/emqx/src/emqx.app.src
@@ -3,7 +3,7 @@
     {id, "emqx"},
     {description, "EMQX Core"},
     % strict semver, bump manually!
-    {vsn, "5.0.20"},
+    {vsn, "5.0.21"},
     {modules, []},
     {registered, []},
     {applications, [