diff --git a/Cargo.toml b/Cargo.toml
index 3f5c695..4623413 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,13 +41,13 @@ itoa = "1.0"
 # jieba-rs = "0.6.7"
 # lancedb = "0.4"
 oasysdb = "0.7.3"
-# once_cell = "1.19"
+# once_cell = "1.20"
 #ort = { version = "=2.0.0-rc.0", default-features = false }
 redb = "2.1"
 regex = "1.10"
 reqwest = { version = "0.12", features = ["stream"] }
-rkyv = {version = "0.7", features = ["validation"]}
-scru128 = "3.0"
+rkyv = {version = "0.8", features = ["aligned", "alloc", "bytecheck"]}
+scru128 = "3.1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1.0"
 scraper = "0.20"
diff --git a/src/flow/rt/collector.rs b/src/flow/rt/collector.rs
index 0104dcc..363af36 100644
--- a/src/flow/rt/collector.rs
+++ b/src/flow/rt/collector.rs
@@ -7,7 +7,7 @@ static NUMBER_REGEX: LazyLock<Regex> =
     LazyLock::new(|| Regex::new(r"[1-9]([\d]+)?(.[\d]+)?").unwrap());
 
 #[derive(Clone, Deserialize, Serialize, rkyv::Archive, rkyv::Deserialize, rkyv::Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum CollectType {
     UserInput,
     Number,
diff --git a/src/flow/rt/condition.rs b/src/flow/rt/condition.rs
index 286f148..07af969 100644
--- a/src/flow/rt/condition.rs
+++ b/src/flow/rt/condition.rs
@@ -12,7 +12,7 @@ use crate::variable::dto::VariableType;
 #[derive(
     Clone, Copy, Deserialize, Serialize, rkyv::Archive, rkyv::Deserialize, rkyv::Serialize,
 )]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum ConditionType {
     UserInput,
     UserIntent,
@@ -24,7 +24,7 @@ pub(crate) enum ConditionType {
 #[derive(
     Clone, Copy, Deserialize, Serialize, rkyv::Archive, rkyv::Deserialize, rkyv::Serialize,
 )]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum CompareType {
     HasValue,
     DoesNotHaveValue,
@@ -43,7 +43,7 @@ pub(crate) enum CompareType {
 #[derive(
     Copy, Clone, Debug, Deserialize, Serialize, rkyv::Archive, rkyv::Deserialize, rkyv::Serialize,
 )]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum TargetDataVariant {
     Const,
     Variable,
@@ -90,7 +90,7 @@ macro_rules! compare_numbers {
 }
 
 #[derive(Clone, Deserialize, Serialize, rkyv::Archive, rkyv::Deserialize, rkyv::Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct ConditionData {
     pub(crate) condition_type: ConditionType,
     pub(crate) compare_type: CompareType,
diff --git a/src/flow/rt/convertor.rs b/src/flow/rt/convertor.rs
index 77621c6..a03fe64 100644
--- a/src/flow/rt/convertor.rs
+++ b/src/flow/rt/convertor.rs
@@ -150,7 +150,7 @@ fn convert_subflow(mainflow_id: &str, flow_idx: usize, f: &SubFlowDetail) -> Res
 }
 
 fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
-    let mut nodes: Vec<(String, rkyv::AlignedVec)> = Vec::with_capacity(32);
+    let mut nodes: Vec<(String, rkyv::util::AlignedVec)> = Vec::with_capacity(32);
     match node {
         Node::DialogNode(n) => {
             let node = TextNode {
@@ -161,7 +161,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
             };
             // println!("Dialog {} {}", &n.node_id, &node.next_node_id);
             let r = RuntimeNnodeEnum::TextNode(node);
-            let bytes = rkyv::to_bytes::<_, 256>(&r).unwrap();
+            let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
             // let mut bytes = rkyv::to_bytes::<_, 256>(&node).unwrap();
             // bytes.push(RuntimeNodeTypeId::TextNode as u8);
             nodes.push((n.node_id.clone(), bytes));
@@ -179,7 +179,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                 next_node_id: n.branches[0].target_node_id.clone(),
             };
             let r = RuntimeNnodeEnum::LlmChatNode(node);
-            let bytes = rkyv::to_bytes::<_, 512>(&r).unwrap();
+            let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
             nodes.push((n.node_id.clone(), bytes));
         }
         Node::ConditionNode(n) => {
@@ -197,7 +197,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                         next_node_id: b.target_node_id.clone(),
                     };
                     let r = RuntimeNnodeEnum::GotoAnotherNode(node);
-                    let bytes = rkyv::to_bytes::<_, 64>(&r).unwrap();
+                    let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
                     // bytes.push(RuntimeNodeTypeId::GotoAnotherNode as u8);
                     nodes.push((node_id, bytes));
                 } else {
@@ -223,7 +223,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                         conditions,
                     };
                     let r = RuntimeNnodeEnum::ConditionNode(node);
-                    let bytes = rkyv::to_bytes::<_, 256>(&r).unwrap();
+                    let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
                     // bytes.push(RuntimeNodeTypeId::ConditionNode as u8);
                     nodes.push((node_id, bytes));
                 }
@@ -255,7 +255,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                 failed_node_id: failed_node_id,
             };
             let r = RuntimeNnodeEnum::CollectNode(node);
-            let bytes = rkyv::to_bytes::<_, 128>(&r).unwrap();
+            let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
             // bytes.push(RuntimeNodeTypeId::CollectNode as u8);
             nodes.push((n.node_id.clone(), bytes));
         }
@@ -265,7 +265,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                 http_api_id: n.http_api_id.clone(),
             };
             let r = RuntimeNnodeEnum::ExternalHttpCallNode(node);
-            let bytes = rkyv::to_bytes::<_, 128>(&r).unwrap();
+            let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
             // bytes.push(RuntimeNodeTypeId::CollectNode as u8);
             nodes.push((n.node_id.clone(), bytes));
         }
@@ -295,7 +295,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                 goto_node_id: goto_node_id,
             };
             let r = RuntimeNnodeEnum::SendEmailNode(node);
-            let bytes = rkyv::to_bytes::<_, 128>(&r).unwrap();
+            let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
             // bytes.push(RuntimeNodeTypeId::CollectNode as u8);
             nodes.push((n.node_id.clone(), bytes));
         }
@@ -308,7 +308,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                         next_node_id: n.goto_subflow_id.clone(),
                     };
                     let r = RuntimeNnodeEnum::GotoMainFlowNode(node);
-                    let bytes = rkyv::to_bytes::<_, 64>(&r).unwrap();
+                    let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
                     nodes.push((n.node_id.clone(), bytes));
                 }
                 NextActionType::GotoSubFlow => {
@@ -316,7 +316,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                         next_node_id: n.goto_subflow_id.clone(),
                     };
                     let r = RuntimeNnodeEnum::GotoAnotherNode(node);
-                    let bytes = rkyv::to_bytes::<_, 64>(&r).unwrap();
+                    let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
                     // bytes.push(RuntimeNodeTypeId::GotoAnotherNode as u8);
                     nodes.push((n.node_id.clone(), bytes));
                 }
@@ -328,7 +328,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
             // log::info!("EndNode {}", &n.node_id);
             let node = TerminateNode {};
             let r = RuntimeNnodeEnum::TerminateNode(node);
-            let ter_bytes = rkyv::to_bytes::<_, 64>(&r).unwrap();
+            let ter_bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
             if n.ending_text.is_empty() {
                 nodes.push((n.node_id.clone(), ter_bytes));
             } else {
@@ -341,7 +341,7 @@ fn convert_node(main_flow_id: &str, node: &mut Node) -> Result<()> {
                     next_node_id: end_node_id.clone(),
                 };
                 let r = RuntimeNnodeEnum::TextNode(node);
-                let bytes = rkyv::to_bytes::<_, 256>(&r).unwrap();
+                let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
                 nodes.push((n.node_id.clone(), bytes));
                 nodes.push((end_node_id, ter_bytes));
             }
diff --git a/src/flow/rt/crud.rs b/src/flow/rt/crud.rs
index d1481f0..10d6af4 100644
--- a/src/flow/rt/crud.rs
+++ b/src/flow/rt/crud.rs
@@ -26,7 +26,7 @@ pub(crate) fn get_runtime_node(
 
 pub(crate) fn save_runtime_nodes(
     main_flow_id: &str,
-    nodes: Vec<(String, rkyv::AlignedVec)>,
+    nodes: Vec<(String, rkyv::util::AlignedVec)>,
 ) -> Result<()> {
     let table_name = get_table_name(main_flow_id);
     let table: TableDefinition<&str, &[u8]> = TableDefinition::new(&table_name);
diff --git a/src/flow/rt/dto.rs b/src/flow/rt/dto.rs
index a17b703..1409b9e 100644
--- a/src/flow/rt/dto.rs
+++ b/src/flow/rt/dto.rs
@@ -36,7 +36,7 @@ pub(crate) struct CollectData {
 }
 
 #[derive(Clone, Deserialize, Serialize, rkyv::Archive, rkyv::Deserialize, rkyv::Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum AnswerType {
     TextPlain,
     TextHtml,
diff --git a/src/flow/rt/node.rs b/src/flow/rt/node.rs
index 1392ea2..22dc6ba 100644
--- a/src/flow/rt/node.rs
+++ b/src/flow/rt/node.rs
@@ -1,9 +1,9 @@
 use core::time::Duration;
-use std::ops::DerefMut;
+// use std::ops::DerefMut;
 
 use enum_dispatch::enum_dispatch;
 use lettre::transport::smtp::PoolConfig;
-use rkyv::{Archive, Deserialize, Serialize};
+use rkyv::{util::AlignedVec, Archive, Deserialize, Serialize};
 
 use super::condition::ConditionData;
 use super::context::Context;
@@ -31,7 +31,7 @@ const VAR_WRAP_SYMBOL: char = '`';
 
 #[enum_dispatch]
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum RuntimeNnodeEnum {
     TextNode,
     ConditionNode,
@@ -88,7 +88,7 @@ fn add_next_node(ctx: &mut Context, next_node_id: &str) {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct TextNode {
     pub(super) text: String,
     pub(crate) text_type: AnswerType,
@@ -115,7 +115,7 @@ impl RuntimeNode for TextNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct GotoMainFlowNode {
     pub(super) main_flow_id: String,
     pub(super) next_node_id: String,
@@ -132,7 +132,7 @@ impl RuntimeNode for GotoMainFlowNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct GotoAnotherNode {
     pub(super) next_node_id: String,
 }
@@ -146,7 +146,7 @@ impl RuntimeNode for GotoAnotherNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct CollectNode {
     pub(super) var_name: String,
     pub(super) collect_type: collector::CollectType,
@@ -176,7 +176,7 @@ impl RuntimeNode for CollectNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct ConditionNode {
     pub(super) next_node_id: String,
     pub(super) goto_node_id: String,
@@ -205,7 +205,7 @@ impl RuntimeNode for ConditionNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct TerminateNode {}
 
 impl RuntimeNode for TerminateNode {
@@ -217,7 +217,7 @@ impl RuntimeNode for TerminateNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct ExternalHttpCallNode {
     pub(super) next_node_id: String,
     pub(super) http_api_id: String,
@@ -254,7 +254,7 @@ impl RuntimeNode for ExternalHttpCallNode {
 }
 
 #[derive(Archive, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct SendEmailNode {
     pub(super) from: String,
     pub(super) to_recipients: Vec<String>,
@@ -364,7 +364,7 @@ impl RuntimeNode for SendEmailNode {
 }
 
 #[derive(Archive, Clone, Deserialize, Serialize, serde::Deserialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum LlmChatNodeExitCondition {
     Intent(String),
     SpecialInputs(String),
@@ -372,7 +372,7 @@ pub(crate) enum LlmChatNodeExitCondition {
 }
 
 #[derive(Archive, Clone, Deserialize, Serialize, serde::Deserialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) enum LlmChatNodeWhenTimeoutThen {
     GotoAnotherNode,
     ResponseAlternateText(String),
@@ -380,7 +380,7 @@ pub(crate) enum LlmChatNodeWhenTimeoutThen {
 }
 
 #[derive(Archive, Clone, Deserialize, Serialize)]
-#[archive(compare(PartialEq), check_bytes)]
+#[rkyv(compare(PartialEq))]
 pub(crate) struct LlmChatNode {
     pub(super) prompt: String,
     pub(super) context_len: u8,
@@ -420,7 +420,7 @@ impl RuntimeNode for LlmChatNode {
             }
         }
         let r = RuntimeNnodeEnum::LlmChatNode(self.clone());
-        let bytes = rkyv::to_bytes::<_, 256>(&r).unwrap();
+        let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&r).unwrap();
         ctx.node = Some(bytes.into_vec());
         if self.streaming {
             let r = super::facade::get_sender(&req.session_id);
@@ -538,9 +538,10 @@ impl RuntimeNode for LlmChatNode {
 }
 
 pub(crate) fn deser_node(bytes: &[u8]) -> Result<RuntimeNnodeEnum> {
-    let mut vec = rkyv::AlignedVec::new();
-    vec.extend_from_slice(bytes);
-    let archived = rkyv::check_archived_root::<RuntimeNnodeEnum>(&vec).unwrap();
-    let deserialized: RuntimeNnodeEnum = archived.deserialize(&mut rkyv::Infallible).unwrap();
-    return Ok(deserialized);
+    let mut v = AlignedVec::<256>::with_capacity(bytes.len());
+    v.extend_from_slice(bytes);
+    let r = rkyv::from_bytes::<RuntimeNnodeEnum, rkyv::rancor::Error>(&v).unwrap();
+    // let archived = rkyv::access::<ArchivedRuntimeNnodeEnum, rkyv::rancor::Error>(bytes).unwrap();
+    // let deserialized = rkyv::deserialize::<RuntimeNnodeEnum, rkyv::rancor::Error>(archived).unwrap();
+    return Ok(r);
 }