diff --git a/readme.md b/readme.md
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--- a/readme.md
+++ b/readme.md
@@ -52,4 +52,6 @@ To exit press ENTER
 
 ## Contributors
 
-- [dmunozv04](https://github.com/dmunozv04) - creator and maintainer
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+- [dmunozv04](https://github.com/dmunozv04) - creator and maintainer
+## License
+[![GNU GPLv3](https://www.gnu.org/graphics/gplv3-127x51.png)](https://www.gnu.org/licenses/gpl-3.0.en.html)
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