diff --git a/examples/ESP32/esp32.ino b/examples/ESP32/ESP32.ino
similarity index 100%
rename from examples/ESP32/esp32.ino
rename to examples/ESP32/ESP32.ino
diff --git a/keywords.txt b/keywords.txt
new file mode 100644
index 0000000..f120810
--- /dev/null
+++ b/keywords.txt
@@ -0,0 +1,29 @@
+MQUnifiedsensor KEYWORD1
+init KEYWORD2
+update KEYWORD2
+externalADCUpdate KEYWORD2
+setR0 KEYWORD2
+setRL KEYWORD2
+setA KEYWORD2
+setB KEYWORD2
+setRegressionMethod KEYWORD2
+setVoltResolution KEYWORD2
+setVCC KEYWORD2
+setPin KEYWORD2
+setADC KEYWORD2
+serialDebug KEYWORD2
+calibrate KEYWORD2
+readSensor KEYWORD2
+readSensorR0Rs KEYWORD2
+validateEcuation KEYWORD2
+getVoltage KEYWORD2
+setRsR0RatioGetPPM KEYWORD2
+getRS KEYWORD2
+stringTofloat KEYWORD2
+getA KEYWORD2
+getB KEYWORD2
+getR0 KEYWORD2
+getRL KEYWORD2
+getVoltResolution KEYWORD2
+getVCC KEYWORD2
+getRegressionMethod KEYWORD2
diff --git a/library.properties b/library.properties
index 8e4ac73..b1e7c3a 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=MQUnifiedsensor
-version=3.0.1
+version=3.0.3
 author= Miguel Califa <miguelangel5612@gmail.com>, Yersson Carrillo<miguelangel5612@gmail.com>, Ghiordy Contreras<miguelangel5612@gmail.com>
 maintainer= Miguel Califa <miguelangel5612@gmail.com>
 sentence= This library allows you to read the MQ sensors very easily.