diff --git a/README.md b/README.md
index b6234da..a905895 100644
--- a/README.md
+++ b/README.md
@@ -272,6 +272,7 @@ Table of Contents
 
 - [**F-Droid**](https://f-droid.org/)
 - [**Fossdroid**](https://fossdroid.com/)
+- [**Guardian Project**](https://guardianproject.info/)
 - [**CellularPrivacy – Recommendations**](https://github.com/CellularPrivacy/Android-IMSI-Catcher-Detector/wiki/Recommendations)
 - [**List of free and open-source Android applications**](https://en.wikipedia.org/wiki/List_of_free_and_open-source_Android_applications)