diff --git a/README.md b/README.md
index c824bcc..874f978 100644
--- a/README.md
+++ b/README.md
@@ -168,9 +168,6 @@ In general, it is possible by complicating the refrigeration scheme to win somew
 Summary: If you want experiments - Experiment. Want reliably - make the system simple.<br><br>
 <img src="./m_add_freezed1.jpg" height="300"> <img src="./m_add_freezed2.jpg" height="300"> <img src="./m_add_freezed3.jpg" height="300"><br><br>
 
-## License
-GPLv3. <br><br>
-This product is distributed in the hope that it will be useful,	but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.<br><br>
 ## Author
 <br>
 gonzho АТ web.de (c) 2018-2021<br>
@@ -483,6 +480,20 @@ Last option
 | USB<->UART (to upload firmware)		| 1	|
 | Current sensor SCT-013-000			| 1	|
 
+## License
+For third-party libraries licenses used in this project please refer to those libriries.<br><br>
+
+© 2021 D.A.A. All rights reserved; gonzho AT web.de; https://github.com/openhp/.<br><br>
+
+Firmware source code licensed under [GPLv3](https://www.gnu.org/licenses/gpl-3.0.en.html). <br><br>
+This product is distributed in the hope that it will be useful,	but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.<br><br>
+
+Text and media materials licensed under [CC-BY-SA License v4.0](https://creativecommons.org/licenses/by-sa/4.0/).<br>
+Attribution: You must clearly attribute Valden Heat Pump (https://github.com/openhp/) original work in any derivative works.<br>
+Share and Share Alike: If you make modifications or additions to the content you re-use, you must license them under the CC-BY-SA License v4.0 or later.<br>
+Indicate changes: If you make modifications or additions, you must indicate in a reasonable fashion that the original work has been modified.<br>
+You are free: to share and adapt the material for any purpose, even commercially as long as you follow the license terms.<br>
+
 ## Author
 <br>
 gonzho АТ web.de (c) 2018-2021<br>