diff --git a/lib/sairedis.h b/lib/sairedis.h
index 56a21bd4dc..3481de3dfb 100644
--- a/lib/sairedis.h
+++ b/lib/sairedis.h
@@ -140,6 +140,20 @@ typedef struct _sai_redis_flex_counter_group_parameter_t
      */
     sai_s8_list_t plugins;
 
+    /**
+     * @brief The bulk chunk size of the counter group
+     *
+     * It should be a number representing the bulk chunk size.
+     */
+    sai_s8_list_t bulk_chunk_size;
+
+    /**
+     * @brief The bulk counter prefix map the counter group
+     *
+     * It should be a string representing bulk chunk size of each sub counter group.
+     */
+    sai_s8_list_t bulk_chunk_size_per_prefix;
+
 } sai_redis_flex_counter_group_parameter_t;
 
 typedef struct _sai_redis_flex_counter_parameter_t