diff --git a/library.json b/library.json
index 8135834..5eb63f8 100644
--- a/library.json
+++ b/library.json
@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/PCF8574.git"
   },
-  "version": "0.5.0",
+  "version": "0.4.2",
   "license": "MIT",
   "frameworks": "*",
   "platforms": "*",
diff --git a/library.properties b/library.properties
index 7a18521..82751ed 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=PCF8574
-version=0.5.0
+version=0.4.2
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Arduino library for PCF8574 - 8 channel I2C IO expander