diff --git a/library.properties b/library.properties
index 4f80396..dc971f7 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=MCP23017_WE
-version=1.3.3
+version=1.3.4
 author=Wolfgang Ewald <wolfgang.ewald@wolles-elektronikkiste.de>
 maintainer=Wolfgang Ewald <wolfgang.ewald@wolles-elektronikkiste.de>
 sentence=A library for the MCP23017 portexpander