diff --git a/apps/emqx/src/emqx.app.src b/apps/emqx/src/emqx.app.src
index 1d8c55fe9..462b7e74b 100644
--- a/apps/emqx/src/emqx.app.src
+++ b/apps/emqx/src/emqx.app.src
@@ -2,7 +2,7 @@
 {application, emqx, [
     {id, "emqx"},
     {description, "EMQX Core"},
-    {vsn, "5.2.0"},
+    {vsn, "5.2.1"},
     {modules, []},
     {registered, []},
     {applications, [