diff --git a/pkg/services/apiserver/service.go b/pkg/services/apiserver/service.go
index 1105604aee1..18be2d05f84 100644
--- a/pkg/services/apiserver/service.go
+++ b/pkg/services/apiserver/service.go
@@ -335,6 +335,7 @@ func (s *service) start(ctx context.Context) error {
 	transport := &roundTripperFunc{ready: make(chan struct{})}
 	serverConfig.LoopbackClientConfig.Transport = transport
 	serverConfig.LoopbackClientConfig.TLSClientConfig = clientrest.TLSClientConfig{}
+	serverConfig.MaxRequestBodyBytes = 16 * 1024 * 1024 // 16MB - determined by the size of `mediumtext` on mysql, which is used to save dashboard data
 
 	var optsregister apistore.StorageOptionsRegister