diff --git a/src/wp-includes/class-http.php b/src/wp-includes/class-http.php
index c802f7faef..abf14aa45c 100644
--- a/src/wp-includes/class-http.php
+++ b/src/wp-includes/class-http.php
@@ -31,6 +31,7 @@ class WP_Http {
 	const HTTP_CONTINUE                   = 100;
 	const SWITCHING_PROTOCOLS             = 101;
 	const PROCESSING                      = 102;
+	const EARLY_HINTS                     = 103;
 
 	const OK                              = 200;
 	const CREATED                         = 201;