diff --git a/README.md b/README.md
index ac6e0e2..5035b6f 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,5 @@
  This is create a folder *librewolf* on current dir, with subfolder core (its content of the firefox.exe), with Firefox configured with scripts/settings of librewolf.  
  From that point you can install using the setup.exe or simple execute the ***firefox.exe*** on the core folder.
 
+### Opensource Licences/Uses
+This scripts use and embed [7zip](https://www.7-zip.org/)