diff --git a/firefox/55-proxy_dns_socks5.yml b/firefox/55-proxy_dns_socks5.yml
new file mode 100644
index 0000000..c228dd4
--- /dev/null
+++ b/firefox/55-proxy_dns_socks5.yml
@@ -0,0 +1,4 @@
+---
+proxy_dns_socks5:
+  description: Use proxy DNS when using SOCKS v5
+  default: false