diff --git a/subfiles/change-firefox-dns.md b/subfiles/change-firefox-dns.md
index 66884d461..5a01f87ae 100644
--- a/subfiles/change-firefox-dns.md
+++ b/subfiles/change-firefox-dns.md
@@ -6,11 +6,22 @@
 Mozilla (Firefox) has partnered up with Cloudflare and will resolve the domain names from the application itself via a DNS server from Cloudflare.
 Cloudflare will then be able to read everyone’s DNS requests.
 
-You can disable it in “about:config".
+> You can disable it in “about:config"
 
 - The string value of "`network.trr.uri`" should be empty.
 - The string value of "`network.trr.resolvers`" should be set to `[]`.
 
+> Or in /distribution/policies.json` (Firefox ESR)
+
+```
+...
+      "DNSOverHTTPS": {
+         "Enabled": false,
+         "ProviderURL": "https://0.0.0.0/"
+      },
+...
+```
+
 Some other settings can also contain Cloudflare URLs. It is recommended to search for "`cloudflare`".
 GNU Icecat and older Firefox versions(<68) are not affected *yet*.