diff --git a/envoy/COMMIT b/envoy/COMMIT
index fb3707de9..4170ec1cd 100644
--- a/envoy/COMMIT
+++ b/envoy/COMMIT
@@ -1 +1 @@
-42068a59e37d0d6c313340d0175cb08cce2574bb
+1173629e531abf758f011c2da15da739f72881c6
diff --git a/envoy/config/core/v3/protocol.pb.go b/envoy/config/core/v3/protocol.pb.go
index 99c19f9e2..87af0321f 100755
--- a/envoy/config/core/v3/protocol.pb.go
+++ b/envoy/config/core/v3/protocol.pb.go
@@ -568,6 +568,8 @@ type HttpProtocolOptions struct {
 	// The maximum number of headers (request headers if configured on HttpConnectionManager,
 	// response headers when configured on a cluster).
 	// If unconfigured, the default maximum number of headers allowed is 100.
+	// The default value for requests can be overridden by setting runtime key “envoy.reloadable_features.max_request_headers_count“.
+	// The default value for responses can be overridden by setting runtime key “envoy.reloadable_features.max_response_headers_count“.
 	// Downstream requests that exceed this limit will receive a 431 response for HTTP/1.x and cause a stream
 	// reset for HTTP/2.
 	// Upstream responses that exceed this limit will result in a 503 response.
@@ -575,6 +577,7 @@ type HttpProtocolOptions struct {
 	// The maximum size of response headers.
 	// If unconfigured, the default is 60 KiB, except for HTTP/1 response headers which have a default
 	// of 80KiB.
+	// The default value can be overridden by setting runtime key “envoy.reloadable_features.max_response_headers_size_kb“.
 	// Responses that exceed this limit will result in a 503 response.
 	// In Envoy, this setting is only valid when configured on an upstream cluster, not on the
 	// :ref:`HTTP Connection Manager
diff --git a/envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.pb.go b/envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.pb.go
index 9fcaad623..02027795c 100755
--- a/envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.pb.go
+++ b/envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.pb.go
@@ -407,6 +407,7 @@ type HttpConnectionManager struct {
 	SchemeHeaderTransformation *v3.SchemeHeaderTransformation `protobuf:"bytes,48,opt,name=scheme_header_transformation,json=schemeHeaderTransformation,proto3" json:"scheme_header_transformation,omitempty"`
 	// The maximum request headers size for incoming connections.
 	// If unconfigured, the default max request headers allowed is 60 KiB.
+	// The default value can be overridden by setting runtime key “envoy.reloadable_features.max_request_headers_size_kb“.
 	// Requests that exceed this limit will receive a 431 response.
 	//
 	// Note: currently some protocol codecs impose limits on the maximum size of a single header: