diff --git a/opentelemetry/proto/common/v1/common.proto b/opentelemetry/proto/common/v1/common.proto
index 079ed2625..8dc24567f 100644
--- a/opentelemetry/proto/common/v1/common.proto
+++ b/opentelemetry/proto/common/v1/common.proto
@@ -34,6 +34,7 @@ message AnyValue {
     double double_value = 4;
     ArrayValue array_value = 5;
     KeyValueList kvlist_value = 6;
+    bytes bytes_value = 7;
   }
 }