diff --git a/firefox/55-proxy_dns_socks5.yml b/firefox/55-proxy_dns_socks5.yml
new file mode 100644
index 00000000..a79c8ae4
--- /dev/null
+++ b/firefox/55-proxy_dns_socks5.yml
@@ -0,0 +1,6 @@
+%YAML 1.2
+---
+version: 1.1
+
+proxy_dns_socks5: false  # Use proxy DNS when using SOCKS v5
+...