diff --git a/README.md b/README.md
index 431ccd2..3189b34 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,4 @@ The extension quickly check if the website has HSTS, HPKP, DANE / TLSA and DNSSE
 
 Only compatible with firefox.
 
-Based on personnal API.
+Based on this [API](https://git.virtit.fr/VirtIT/wext-httpspluschecker_api).