diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f9cb1a..53443ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,12 +6,17 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.3.9] - 2023-09-23
+- Add Wire1 support for ESP32
+- update readme.md
+- minor edits
+
+
 ## [0.3.8] - 2023-02-04
 - update readme.md
 - update GitHub actions
 - update license 2023
 
-
 ## [0.3.7] - 2022-11-16
 - fix #40 - add interrupt section to readme.md
 
diff --git a/PCF8574.cpp b/PCF8574.cpp
index 2cc3e3f..eb6f176 100644
--- a/PCF8574.cpp
+++ b/PCF8574.cpp
@@ -2,7 +2,7 @@
 //    FILE: PCF8574.cpp
 //  AUTHOR: Rob Tillaart
 //    DATE: 02-febr-2013
-// VERSION: 0.3.8
+// VERSION: 0.3.9
 // PURPOSE: Arduino library for PCF8574 - 8 channel I2C IO expander
 //     URL: https://github.com/RobTillaart/PCF8574
 //          http://forum.arduino.cc/index.php?topic=184800
@@ -25,7 +25,6 @@ PCF8574::PCF8574(const uint8_t deviceAddress, TwoWire *wire)
 #if defined (ESP8266) || defined(ESP32)
 bool PCF8574::begin(int dataPin, int clockPin, uint8_t value)
 {
-  _wire = &Wire;
   if ((dataPin < 255) && (clockPin < 255))
   {
     _wire->begin(dataPin, clockPin);
@@ -230,7 +229,7 @@ void PCF8574::select(const uint8_t pin)
 };
 
 
-void PCF8574::selectN(const uint8_t pin) 
+void PCF8574::selectN(const uint8_t pin)
 {
   uint8_t n = 0xFF;
   if (pin < 8) n = (2 << pin) - 1;
diff --git a/PCF8574.h b/PCF8574.h
index 4b19ba8..331922d 100644
--- a/PCF8574.h
+++ b/PCF8574.h
@@ -3,7 +3,7 @@
 //    FILE: PCF8574.h
 //  AUTHOR: Rob Tillaart
 //    DATE: 02-febr-2013
-// VERSION: 0.3.8
+// VERSION: 0.3.9
 // PURPOSE: Arduino library for PCF8574 - 8 channel I2C IO expander
 //     URL: https://github.com/RobTillaart/PCF8574
 //          http://forum.arduino.cc/index.php?topic=184800
@@ -13,7 +13,7 @@
 #include "Wire.h"
 
 
-#define PCF8574_LIB_VERSION         (F("0.3.8"))
+#define PCF8574_LIB_VERSION         (F("0.3.9"))
 
 #ifndef PCF8574_INITIAL_VALUE
 #define PCF8574_INITIAL_VALUE       0xFF
diff --git a/README.md b/README.md
index aeae609..bf82b9a 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,11 @@
 [![Arduino CI](https://github.com/RobTillaart/PCF8574/workflows/Arduino%20CI/badge.svg)](https://github.com/marketplace/actions/arduino_ci)
 [![Arduino-lint](https://github.com/RobTillaart/PCF8574/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/RobTillaart/PCF8574/actions/workflows/arduino-lint.yml)
 [![JSON check](https://github.com/RobTillaart/PCF8574/actions/workflows/jsoncheck.yml/badge.svg)](https://github.com/RobTillaart/PCF8574/actions/workflows/jsoncheck.yml)
+[![GitHub issues](https://img.shields.io/github/issues/RobTillaart/PCF8574.svg)](https://github.com/RobTillaart/PCF8574/issues)
+
 [![License: MIT](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/RobTillaart/PCF8574/blob/master/LICENSE)
 [![GitHub release](https://img.shields.io/github/release/RobTillaart/PCF8574.svg?maxAge=3600)](https://github.com/RobTillaart/PCF8574/releases)
+[![PlatformIO Registry](https://badges.registry.platformio.org/packages/robtillaart/library/PCF8574.svg)](https://registry.platformio.org/libraries/robtillaart/PCF8574)
 
 
 # PCF8574
@@ -195,3 +198,11 @@ It is advised to use pull-up or pull-down resistors so the lines have a defined
 #### Wont
 
 
+## Support
+
+If you appreciate my libraries, you can support the development and maintenance.
+Improve the quality of the libraries by providing issues and Pull Requests, or
+donate through PayPal or GitHub sponsors.
+
+Thank you,
+
diff --git a/keywords.txt b/keywords.txt
index ceccac6..504e3dd 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -40,6 +40,7 @@ selectAll	KEYWORD2
 
 # Constants (	LITERAL1)
 PCF8574_LIB_VERSION	LITERAL1
+
 PCF8574_INITIAL_VALUE	LITERAL1
 PCF8574_OK	LITERAL1
 PCF8574_PIN_ERROR	LITERAL1
diff --git a/library.json b/library.json
index 6e9ce08..b54b8e2 100644
--- a/library.json
+++ b/library.json
@@ -15,9 +15,9 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/PCF8574.git"
   },
-  "version": "0.3.8",
+  "version": "0.3.9",
   "license": "MIT",
-  "frameworks": "arduino",
+  "frameworks": "*",
   "platforms": "*",
   "headers": "PCF8574.h"
 }
diff --git a/library.properties b/library.properties
index 105f334..45b9340 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=PCF8574
-version=0.3.8
+version=0.3.9
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Arduino library for PCF8574 - 8 channel I2C IO expander