diff --git a/caddyhttp/proxy/upstream.go b/caddyhttp/proxy/upstream.go
index 1a45ff706..64f8c5513 100644
--- a/caddyhttp/proxy/upstream.go
+++ b/caddyhttp/proxy/upstream.go
@@ -289,6 +289,7 @@ func parseBlock(c *caddyfile.Dispenser, u *staticUpstream) error {
 	case "transparent":
 		u.upstreamHeaders.Add("Host", "{host}")
 		u.upstreamHeaders.Add("X-Real-IP", "{remote}")
+		u.upstreamHeaders.Add("X-Forwarded-For", "{remote}")
 		u.upstreamHeaders.Add("X-Forwarded-Proto", "{scheme}")
 	case "websocket":
 		u.upstreamHeaders.Add("Connection", "{>Connection}")