diff --git a/WebHook-And-CA.md b/WebHook-And-CA.md
index b27c342..c0310cd 100644
--- a/WebHook-And-CA.md
+++ b/WebHook-And-CA.md
@@ -1,4 +1,4 @@
-Because NodeJS uses an [hardcoded list of certificates](https://github.com/nodejs/node/issues/4175) if you deploy a site (receiving the webhook from wekan) behind a reverse proxy on https with a Let's Encrypt certificate you may have a problem: Let's Encrypt's CA is not recognized.
+Because NodeJS uses an [hardcoded list of certificates](https://github.com/nodejs/node/issues/4175) if you deploy a site (receiving the webhook from wekan) behind a reverse proxy on https with a Let's Encrypt certificate you may have a problem: Let's Encrypt's CA is not recognized. The correct answer is [here](https://stackoverflow.com/questions/29283040/how-to-add-custom-certificate-authority-ca-to-nodejs/47160447#47160447).
 
 * Download the Let’s Encrypt Authority X3 (IdenTrust cross-signed) from [here](https://letsencrypt.org/certificates/)
 ```sh