diff --git a/vendor/github.com/jhump/protoreflect/internal/unrecognized.go b/vendor/github.com/jhump/protoreflect/internal/unrecognized.go
new file mode 100644
index 0000000..c903d4b
--- /dev/null
+++ b/vendor/github.com/jhump/protoreflect/internal/unrecognized.go
@@ -0,0 +1,86 @@
+package internal
+
+import (
+	"reflect"
+
+	"github.com/golang/protobuf/proto"
+)
+
+var typeOfBytes = reflect.TypeOf([]byte(nil))
+
+// GetUnrecognized fetches the bytes of unrecognized fields for the given message.
+func GetUnrecognized(msg proto.Message) []byte {
+	val := reflect.Indirect(reflect.ValueOf(msg))
+	u := val.FieldByName("XXX_unrecognized")
+	if u.IsValid() && u.Type() == typeOfBytes {
+		return u.Interface().([]byte)
+	}
+
+	// Fallback to reflection for API v2 messages
+	get, _, _, ok := unrecognizedGetSetMethods(val)
+	if !ok {
+		return nil
+	}
+
+	return get.Call([]reflect.Value(nil))[0].Convert(typeOfBytes).Interface().([]byte)
+}
+
+// SetUnrecognized adds the given bytes to the unrecognized fields for the given message.
+func SetUnrecognized(msg proto.Message, data []byte) {
+	val := reflect.Indirect(reflect.ValueOf(msg))
+	u := val.FieldByName("XXX_unrecognized")
+	if u.IsValid() && u.Type() == typeOfBytes {
+		// Just store the bytes in the unrecognized field
+		ub := u.Interface().([]byte)
+		ub = append(ub, data...)
+		u.Set(reflect.ValueOf(ub))
+		return
+	}
+
+	// Fallback to reflection for API v2 messages
+	get, set, argType, ok := unrecognizedGetSetMethods(val)
+	if !ok {
+		return
+	}
+
+	existing := get.Call([]reflect.Value(nil))[0].Convert(typeOfBytes).Interface().([]byte)
+	if len(existing) > 0 {
+		data = append(existing, data...)
+	}
+	set.Call([]reflect.Value{reflect.ValueOf(data).Convert(argType)})
+}
+
+func unrecognizedGetSetMethods(val reflect.Value) (get reflect.Value, set reflect.Value, argType reflect.Type, ok bool) {
+	// val could be an APIv2 message. We use reflection to interact with
+	// this message so that we don't have a hard dependency on the new
+	// version of the protobuf package.
+	refMethod := val.MethodByName("ProtoReflect")
+	if !refMethod.IsValid() {
+		if val.CanAddr() {
+			refMethod = val.Addr().MethodByName("ProtoReflect")
+		}
+		if !refMethod.IsValid() {
+			return
+		}
+	}
+	refType := refMethod.Type()
+	if refType.NumIn() != 0 || refType.NumOut() != 1 {
+		return
+	}
+	ref := refMethod.Call([]reflect.Value(nil))
+	getMethod, setMethod := ref[0].MethodByName("GetUnknown"), ref[0].MethodByName("SetUnknown")
+	if !getMethod.IsValid() || !setMethod.IsValid() {
+		return
+	}
+	getType := getMethod.Type()
+	setType := setMethod.Type()
+	if getType.NumIn() != 0 || getType.NumOut() != 1 || setType.NumIn() != 1 || setType.NumOut() != 0 {
+		return
+	}
+	arg := setType.In(0)
+	if !arg.ConvertibleTo(typeOfBytes) || getType.Out(0) != arg {
+		return
+	}
+
+	return getMethod, setMethod, arg, true
+}