diff --git a/lib/bindings/http/constants.js b/lib/bindings/http/constants.js
index 6ca1b48..19106eb 100644
--- a/lib/bindings/http/constants.js
+++ b/lib/bindings/http/constants.js
@@ -24,7 +24,6 @@ module.exports = {
     SCHEMA_URL        : "ce-schemaurl",
     EXTENSIONS_PREFIX : "ce-"
   },
-
   STRUCTURED_ATTRS_02 : {
     TYPE         : "type",
     SPEC_VERSION : "specversion",
@@ -34,5 +33,17 @@ module.exports = {
     SCHEMA_URL   : "schemaurl",
     CONTENT_TYPE : "contenttype",
     DATA         : "data"
+  },
+
+  BINARY_HEADERS_03 : {
+    TYPE              : "ce-type",
+    SPEC_VERSION      : "ce-specversion",
+    SOURCE            : "ce-source",
+    ID                : "ce-id",
+    TIME              : "ce-time",
+    SCHEMA_URL        : "ce-schemaurl",
+    CONTENT_ENCONDING : "ce-datacontentencoding",
+    SUBJECT           : "ce-subject",
+    EXTENSIONS_PREFIX : "ce-"
   }
 };