diff --git a/Mozilla/Mozilla b/Mozilla/Mozilla
index f21f049..5e2f036 100644
--- a/Mozilla/Mozilla
+++ b/Mozilla/Mozilla
@@ -112,6 +112,7 @@
 0.0.0.0 normandy-cloudfront.cdn.mozilla.net
 0.0.0.0 normandy.cdn.mozilla.net
 0.0.0.0 oauth.accounts.firefox.com
+0.0.0.0 observatory.mozilla.org
 0.0.0.0 ocsp.affirmtrust.com
 0.0.0.0 ocsp.apple.com
 0.0.0.0 ocsp.ca.vodafone.com