diff --git a/source/libs/sync/inc/syncRaftCfg.h b/source/libs/sync/inc/syncRaftCfg.h
index cd64402738..9969a0b974 100644
--- a/source/libs/sync/inc/syncRaftCfg.h
+++ b/source/libs/sync/inc/syncRaftCfg.h
@@ -47,14 +47,15 @@ typedef struct SRaftCfg {
 SRaftCfg *raftCfgOpen(const char *path);
 int32_t   raftCfgClose(SRaftCfg *pRaftCfg);
 int32_t   raftCfgPersist(SRaftCfg *pRaftCfg);
+int32_t   raftCfgAddConfigIndex(SRaftCfg *pRaftCfg, SyncIndex configIndex);
 
-cJSON * syncCfg2Json(SSyncCfg *pSyncCfg);
-char *  syncCfg2Str(SSyncCfg *pSyncCfg);
+cJSON  *syncCfg2Json(SSyncCfg *pSyncCfg);
+char   *syncCfg2Str(SSyncCfg *pSyncCfg);
 int32_t syncCfgFromJson(const cJSON *pRoot, SSyncCfg *pSyncCfg);
 int32_t syncCfgFromStr(const char *s, SSyncCfg *pSyncCfg);
 
-cJSON * raftCfg2Json(SRaftCfg *pRaftCfg);
-char *  raftCfg2Str(SRaftCfg *pRaftCfg);
+cJSON  *raftCfg2Json(SRaftCfg *pRaftCfg);
+char   *raftCfg2Str(SRaftCfg *pRaftCfg);
 int32_t raftCfgFromJson(const cJSON *pRoot, SRaftCfg *pRaftCfg);
 int32_t raftCfgFromStr(const char *s, SRaftCfg *pRaftCfg);
 
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 3e5dcfea42..83c5ee4af1 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -2309,6 +2309,8 @@ int32_t syncNodeCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endIndex,
 
         // config change
         if (pEntry->originalRpcType == TDMT_SYNC_CONFIG_CHANGE) {
+          raftCfgAddConfigIndex(ths->pRaftCfg, pEntry->index);
+          raftCfgPersist(ths->pRaftCfg);
           code = syncNodeConfigChange(ths, &rpcMsg, pEntry);
           ASSERT(code == 0);
         }
diff --git a/source/libs/sync/src/syncRaftCfg.c b/source/libs/sync/src/syncRaftCfg.c
index 2d51f1f6f0..8831704d7c 100644
--- a/source/libs/sync/src/syncRaftCfg.c
+++ b/source/libs/sync/src/syncRaftCfg.c
@@ -66,6 +66,13 @@ int32_t raftCfgPersist(SRaftCfg *pRaftCfg) {
   return 0;
 }
 
+int32_t raftCfgAddConfigIndex(SRaftCfg *pRaftCfg, SyncIndex configIndex) {
+  ASSERT(pRaftCfg->configIndexCount <= MAX_CONFIG_INDEX_COUNT);
+  (pRaftCfg->configIndexArr)[pRaftCfg->configIndexCount] = configIndex;
+  ++(pRaftCfg->configIndexCount);
+  return 0;
+}
+
 cJSON *syncCfg2Json(SSyncCfg *pSyncCfg) {
   char   u64buf[128] = {0};
   cJSON *pRoot = cJSON_CreateObject();