diff --git a/libraries/DHT2pin/CHANGELOG.md b/libraries/DHT2pin/CHANGELOG.md
index 2febb35b..080d4d7a 100644
--- a/libraries/DHT2pin/CHANGELOG.md
+++ b/libraries/DHT2pin/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.2.1] - 2023-10-24
+- update readme.md
+
+
 ## [0.2.0] - 2023-01-29
 - add temperature() and humidity() as access function.
 - move code to .cpp
diff --git a/libraries/DHT2pin/dht2pin.cpp b/libraries/DHT2pin/dht2pin.cpp
index ddd866d2..f73bfc9a 100644
--- a/libraries/DHT2pin/dht2pin.cpp
+++ b/libraries/DHT2pin/dht2pin.cpp
@@ -1,7 +1,7 @@
 //
 //    FILE: DHT2pin.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.2.0
+// VERSION: 0.2.1
 // PURPOSE: Experimental DHT _temperature & _humidiy Sensor library for Arduino
 //     URL: https://github.com/RobTillaart/DHT2pin
 //          http://arduino.cc/playground/Main/DHTLib
diff --git a/libraries/DHT2pin/dht2pin.h b/libraries/DHT2pin/dht2pin.h
index 6f9a2b25..4a5b8797 100644
--- a/libraries/DHT2pin/dht2pin.h
+++ b/libraries/DHT2pin/dht2pin.h
@@ -2,7 +2,7 @@
 //
 //    FILE: dht2pin.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.2.0
+// VERSION: 0.2.1
 // PURPOSE: DHT Temperature & Humidity Sensor library for Arduino
 //     URL: https://github.com/RobTillaart/DHT2pin
 //          http://arduino.cc/playground/Main/DHTLib
@@ -11,7 +11,7 @@
 #include <Arduino.h>
 
 
-#define DHT2PIN_LIB_VERSION               (F("0.2.0"))
+#define DHT2PIN_LIB_VERSION               (F("0.2.1"))
 
 
 #define DHTLIB_OK                         0
diff --git a/libraries/DHT2pin/library.json b/libraries/DHT2pin/library.json
index 9ab1cde5..6cd19b84 100644
--- a/libraries/DHT2pin/library.json
+++ b/libraries/DHT2pin/library.json
@@ -18,9 +18,9 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/DHT2pin"
   },
-  "version": "0.2.0",
+  "version": "0.2.1",
   "license": "MIT",
-  "frameworks": "arduino",
+  "frameworks": "*",
   "platforms": "*",
   "headers": "DHT2pin.h"
 }
diff --git a/libraries/DHT2pin/library.properties b/libraries/DHT2pin/library.properties
index c843be20..263a5d94 100644
--- a/libraries/DHT2pin/library.properties
+++ b/libraries/DHT2pin/library.properties
@@ -1,5 +1,5 @@
 name=DHT2pin
-version=0.2.0
+version=0.2.1
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Experimental version of the DHT library, using 2 data pins instead of 1.
diff --git a/libraries/DHT2pin/readme.md b/libraries/DHT2pin/readme.md
index 1909941f..382eabb2 100644
--- a/libraries/DHT2pin/readme.md
+++ b/libraries/DHT2pin/readme.md
@@ -2,8 +2,11 @@
 [![Arduino CI](https://github.com/RobTillaart/DHT2pin/workflows/Arduino%20CI/badge.svg)](https://github.com/marketplace/actions/arduino_ci)
 [![Arduino-lint](https://github.com/RobTillaart/DHT2pin/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/RobTillaart/DHT2pin/actions/workflows/arduino-lint.yml)
 [![JSON check](https://github.com/RobTillaart/DHT2pin/actions/workflows/jsoncheck.yml/badge.svg)](https://github.com/RobTillaart/DHT2pin/actions/workflows/jsoncheck.yml)
+[![GitHub issues](https://img.shields.io/github/issues/RobTillaart/DHT2pin.svg)](https://github.com/RobTillaart/DHT2pin/issues)
+
 [![License: MIT](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/RobTillaart/DHT2pin/blob/master/LICENSE)
 [![GitHub release](https://img.shields.io/github/release/RobTillaart/DHT2pin.svg?maxAge=3600)](https://github.com/RobTillaart/DHT2pin/releases)
+[![PlatformIO Registry](https://badges.registry.platformio.org/packages/robtillaart/library/DHT2pin.svg)](https://registry.platformio.org/libraries/robtillaart/DHT2pin)
 
 
 # DHT2pin
@@ -62,3 +65,12 @@ See example
 
 - no active development planned
 
+
+## 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,
+