diff --git a/Appendix-A---Test-Sites.md b/Appendix-A---Test-Sites.md
index 775f2c4..61342c1 100644
--- a/Appendix-A---Test-Sites.md
+++ b/Appendix-A---Test-Sites.md
@@ -32,7 +32,7 @@ These are good sources to grab information on your results in one hit, but **do
 - [BrowserLeaks](https://www.browserleaks.com/) - **h**ttps://www.browserleaks.com/
 - [CanvasBlocker Test Pages](https://canvasblocker.kkapsner.de/test/) - **h**ttps://canvasblocker.kkapsner.de/test/
 - [Privacycheck](https://privacycheck.sec.lrz.de/index.html) - **h**ttps://privacycheck.sec.lrz.de/index.html
-
+   * [ETag](https://privacycheck.sec.lrz.de/passive/fp_etag/fp_etag.php) - **h**ttps://privacycheck.sec.lrz.de/passive/fp_etag/fp_etag.php
 ### :small_orange_diamond: Encryption / Ciphers / SSL/TLS / Certificates
 - [BadSSL](https://badssl.com/) - **h**ttps://badssl.com/
 - [DCSec](https://cc.dcsec.uni-hannover.de/) - **h**ttps://cc.dcsec.uni-hannover.de/