diff --git a/platformio.ini b/platformio.ini
index 9344e9c..c8cf8bc 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [common]
-version = "1.3.20"
+version = "1.3.21"
 
 #test