diff --git a/include/iscsi.h b/include/iscsi.h
index 47f162f..622cd4a 100644
--- a/include/iscsi.h
+++ b/include/iscsi.h
@@ -36,11 +36,12 @@ struct sockaddr;
 struct scsi_iovec;
 
 /* API VERSION */
-#define LIBISCSI_API_VERSION (20160501)
+#define LIBISCSI_API_VERSION (20160603)
 
 /* FEATURES */
 #define LIBISCSI_FEATURE_IOVECTOR (1)
 #define LIBISCSI_FEATURE_NOP_COUNTER (1)
+#define LIBISCSI_FEATURE_ISER (1)
 
 #define MAX_STRING_SIZE (255)