diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..2c55942
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,41 @@
+# Updated 2018 and 2020
+# This module is based on the below cited resources, which are all
+# based on the documentation as provided in the Bosch Data Sheet and
+# the sample implementation provided therein.
+#
+# Final Document: BST-BME280-DS002-15
+#
+# Authors: Paul Cunnane 2016, Peter Dahlebrg 2016
+#
+# This module borrows from the Adafruit BME280 Python library. Original
+# Copyright notices are reproduced below.
+#
+# Those libraries were written for the Raspberry Pi. This modification is
+# intended for the MicroPython and esp8266 boards.
+#
+# Copyright (c) 2014 Adafruit Industries
+# Author: Tony DiCola
+#
+# Based on the BMP280 driver with BME280 changes provided by
+# David J Taylor, Edinburgh (www.satsignal.eu)
+#
+# Based on Adafruit_I2C.py created by Kevin Townsend.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
diff --git a/bme280_float.py b/bme280_float.py
index ee90c4f..06f1b6d 100644
--- a/bme280_float.py
+++ b/bme280_float.py
@@ -1,4 +1,4 @@
-# Updated 2018
+# Updated 2018 and 2020
 # This module is based on the below cited resources, which are all
 # based on the documentation as provided in the Bosch Data Sheet and
 # the sample implementation provided therein.
diff --git a/bme280_int.py b/bme280_int.py
index 9fb678d..af118f6 100644
--- a/bme280_int.py
+++ b/bme280_int.py
@@ -1,4 +1,4 @@
-# Updated 2018
+# Updated 2018 and 2020
 # This module is based on the below cited resources, which are all
 # based on the documentation as provided in the Bosch Data Sheet and
 # the sample implementation provided therein.
@@ -39,10 +39,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 #
-# Based on the documentation as provided in the Bosch Data Sheet and
-# the sample implementation provided therein.
-# Document BST-BME280-DS002-15
-#
 
 import time
 from ustruct import unpack, unpack_from