diff --git a/precompile/binaries/stdlib/minitswap.mv b/precompile/binaries/stdlib/minitswap.mv
index a79ed333..a835ec55 100644
Binary files a/precompile/binaries/stdlib/minitswap.mv and b/precompile/binaries/stdlib/minitswap.mv differ
diff --git a/precompile/modules/initia_stdlib/sources/ibctesting/ibctesting.move b/precompile/modules/initia_stdlib/sources/ibctesting/ibctesting.move
index 2f0e6d95..47c5a28a 100644
--- a/precompile/modules/initia_stdlib/sources/ibctesting/ibctesting.move
+++ b/precompile/modules/initia_stdlib/sources/ibctesting/ibctesting.move
@@ -205,7 +205,7 @@ module initia_std::ibctesting {
                     check_dispatch_type_compatibility_for_testing(
                         &dispatchable_ibc_timeout_function_info(), &function_info
                     );
-                    dispatchable_ibc_timeout(async_callback.id, &function_info);
+                    dispatchable_ibc_timeout((async_callback.id as u64), &function_info);
                 } else if (option::is_some(&result.async_callback)) {
                     let async_callback = option::destroy_some(result.async_callback);
                     let function_info =
@@ -218,7 +218,7 @@ module initia_std::ibctesting {
                         &dispatchable_ibc_ack_function_info(), &function_info
                     );
                     dispatchable_ibc_ack(
-                        async_callback.id, result.success, &function_info
+                        (async_callback.id as u64), result.success, &function_info
                     );
                 };
             }
@@ -401,7 +401,7 @@ module initia_std::ibctesting {
     }
 
     struct MoveAsyncCallback has copy, drop, store {
-        id: u64,
+        id: u32,
         module_address: address,
         module_name: String
     }
diff --git a/precompile/modules/initia_stdlib/sources/minitswap.move b/precompile/modules/initia_stdlib/sources/minitswap.move
index 687c03fb..2ed18e7f 100644
--- a/precompile/modules/initia_stdlib/sources/minitswap.move
+++ b/precompile/modules/initia_stdlib/sources/minitswap.move
@@ -2315,17 +2315,34 @@ module initia_std::minitswap {
         evm: Option<MemoEvm>
     }
 
+    struct IBCMemoV2 has copy, drop {
+        _move_: MemoMoveV2,
+        wasm: Option<MemoWasm>,
+        evm: Option<MemoEvm>
+    }
+
     struct MemoMove has copy, drop {
         message: Option<MemoMoveMessage>,
         async_callback: MemoAsyncCallback
     }
 
+    struct MemoMoveV2 has copy, drop {
+        message: Option<MemoMoveMessage>,
+        async_callback: MemoAsyncCallbackV2
+    }
+
     struct MemoAsyncCallback has copy, drop {
         id: u64,
         module_address: address,
         module_name: String
     }
 
+    struct MemoAsyncCallbackV2 has copy, drop {
+        id: u32, // Use u32 instead of u64 to keep it as number type after json marshal.
+        module_address: address,
+        module_name: String
+    }
+
     struct MemoMoveMessage has copy, drop {
         module_address: String,
         module_name: String,
@@ -2381,11 +2398,11 @@ module initia_std::minitswap {
         op_denom: String,
         amount: u64
     ): (String, String) {
-        let memo = IBCMemo {
-            _move_: MemoMove {
+        let memo = IBCMemoV2 {
+            _move_: MemoMoveV2 {
                 message: option::none(),
-                async_callback: MemoAsyncCallback {
-                    id: batch_index,
+                async_callback: MemoAsyncCallbackV2 {
+                    id: (batch_index as u32),
                     module_address: @initia_std,
                     module_name: string::utf8(b"minitswap")
                 }
@@ -3419,7 +3436,7 @@ module initia_std::minitswap {
         assert!(
             memo
                 == string::utf8(
-                    b"{\"evm\":null,\"move\":{\"async_callback\":{\"id\":\"1\",\"module_address\":\"0x1\",\"module_name\":\"minitswap\"},\"message\":{\"args\":[\"CG9wX2Rlbm9t\",\"QEIPAAAAAAA=\",\"CHJlY2VpdmVy\"],\"function_name\":\"minitswap_hook\",\"module_address\":\"0x1\",\"module_name\":\"minitswap_hook\",\"type_args\":[]}},\"wasm\":null}"
+                    b"{\"evm\":null,\"move\":{\"async_callback\":{\"id\":1,\"module_address\":\"0x1\",\"module_name\":\"minitswap\"},\"message\":{\"args\":[\"CG9wX2Rlbm9t\",\"QEIPAAAAAAA=\",\"CHJlY2VpdmVy\"],\"function_name\":\"minitswap_hook\",\"module_address\":\"0x1\",\"module_name\":\"minitswap_hook\",\"type_args\":[]}},\"wasm\":null}"
                 ),
             1
         );
@@ -3438,7 +3455,7 @@ module initia_std::minitswap {
         assert!(
             memo
                 == string::utf8(
-                    b"{\"evm\":null,\"move\":{\"async_callback\":{\"id\":\"1\",\"module_address\":\"0x1\",\"module_name\":\"minitswap\"},\"message\":null},\"wasm\":{\"message\":{\"contracts\":\"cosmwasm_contract_addr\",\"funds\":[{\"amount\":\"1000000\",\"denom\":\"op_denom\"}],\"msg\":{\"minitswap_hook\":{\"receiver\":\"receiver\"}}}}}"
+                    b"{\"evm\":null,\"move\":{\"async_callback\":{\"id\":1,\"module_address\":\"0x1\",\"module_name\":\"minitswap\"},\"message\":null},\"wasm\":{\"message\":{\"contracts\":\"cosmwasm_contract_addr\",\"funds\":[{\"amount\":\"1000000\",\"denom\":\"op_denom\"}],\"msg\":{\"minitswap_hook\":{\"receiver\":\"receiver\"}}}}}"
                 ),
             3
         );
diff --git a/precompile/modules/initia_stdlib/tests/ibc_transfer_tests.move b/precompile/modules/initia_stdlib/tests/ibc_transfer_tests.move
index 69481bdd..c1a822a5 100644
--- a/precompile/modules/initia_stdlib/tests/ibc_transfer_tests.move
+++ b/precompile/modules/initia_stdlib/tests/ibc_transfer_tests.move
@@ -285,7 +285,7 @@ module cafe::ibc_transfer_tests {
             },
             timeout_timestamp: 0u64, // timeout timestamp is not used in this test
             memo: string::utf8(
-                b"{\"move\":{\"async_callback\":{\"id\": \"103\", \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
+                b"{\"move\":{\"async_callback\":{\"id\": 103, \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
             )
         };
 
@@ -362,7 +362,7 @@ module cafe::ibc_transfer_tests {
             },
             timeout_timestamp: 0u64, // timeout timestamp is not used in this test
             memo: string::utf8(
-                b"{\"move\":{\"async_callback\":{\"id\": \"103\", \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
+                b"{\"move\":{\"async_callback\":{\"id\": 103, \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
             )
         };
 
@@ -441,7 +441,7 @@ module cafe::ibc_transfer_tests {
             },
             timeout_timestamp: 0u64, // timeout timestamp is not used in this test
             memo: string::utf8(
-                b"{\"move\":{\"async_callback\":{\"id\": \"103\", \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
+                b"{\"move\":{\"async_callback\":{\"id\": 103, \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
             )
         };
 
diff --git a/precompile/modules/minitia_stdlib/sources/ibctesting/ibctesting.move b/precompile/modules/minitia_stdlib/sources/ibctesting/ibctesting.move
index 826d6045..b18e9e40 100644
--- a/precompile/modules/minitia_stdlib/sources/ibctesting/ibctesting.move
+++ b/precompile/modules/minitia_stdlib/sources/ibctesting/ibctesting.move
@@ -205,7 +205,7 @@ module minitia_std::ibctesting {
                     check_dispatch_type_compatibility_for_testing(
                         &dispatchable_ibc_timeout_function_info(), &function_info
                     );
-                    dispatchable_ibc_timeout(async_callback.id, &function_info);
+                    dispatchable_ibc_timeout((async_callback.id as u64), &function_info);
                 } else if (option::is_some(&result.async_callback)) {
                     let async_callback = option::destroy_some(result.async_callback);
                     let function_info =
@@ -218,7 +218,7 @@ module minitia_std::ibctesting {
                         &dispatchable_ibc_ack_function_info(), &function_info
                     );
                     dispatchable_ibc_ack(
-                        async_callback.id, result.success, &function_info
+                        (async_callback.id as u64), result.success, &function_info
                     );
                 };
             }
@@ -401,7 +401,7 @@ module minitia_std::ibctesting {
     }
 
     struct MoveAsyncCallback has copy, drop, store {
-        id: u64,
+        id: u32,
         module_address: address,
         module_name: String
     }
diff --git a/precompile/modules/minitia_stdlib/tests/ibc_transfer_tests.move b/precompile/modules/minitia_stdlib/tests/ibc_transfer_tests.move
index 69481bdd..c1a822a5 100644
--- a/precompile/modules/minitia_stdlib/tests/ibc_transfer_tests.move
+++ b/precompile/modules/minitia_stdlib/tests/ibc_transfer_tests.move
@@ -285,7 +285,7 @@ module cafe::ibc_transfer_tests {
             },
             timeout_timestamp: 0u64, // timeout timestamp is not used in this test
             memo: string::utf8(
-                b"{\"move\":{\"async_callback\":{\"id\": \"103\", \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
+                b"{\"move\":{\"async_callback\":{\"id\": 103, \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
             )
         };
 
@@ -362,7 +362,7 @@ module cafe::ibc_transfer_tests {
             },
             timeout_timestamp: 0u64, // timeout timestamp is not used in this test
             memo: string::utf8(
-                b"{\"move\":{\"async_callback\":{\"id\": \"103\", \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
+                b"{\"move\":{\"async_callback\":{\"id\": 103, \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
             )
         };
 
@@ -441,7 +441,7 @@ module cafe::ibc_transfer_tests {
             },
             timeout_timestamp: 0u64, // timeout timestamp is not used in this test
             memo: string::utf8(
-                b"{\"move\":{\"async_callback\":{\"id\": \"103\", \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
+                b"{\"move\":{\"async_callback\":{\"id\": 103, \"module_address\": \"0xcafe\", \"module_name\": \"ibc_transfer_tests_helpers\"}}}"
             )
         };