diff --git a/android/src/main/java/io/ltbl/bdkrn/BdkRnModule.kt b/android/src/main/java/io/ltbl/bdkrn/BdkRnModule.kt
index 4ac62e1..0cd67a9 100644
--- a/android/src/main/java/io/ltbl/bdkrn/BdkRnModule.kt
+++ b/android/src/main/java/io/ltbl/bdkrn/BdkRnModule.kt
@@ -393,8 +393,10 @@ class BdkRnModule(reactContext: ReactApplicationContext) :
     @ReactMethod
     fun sync(id: String, blockChainId: String, result: Promise) {
         try {
-            getWalletById(id).sync(getBlockchainById(blockChainId), BdkProgress)
-            result.resolve(true)
+            Thread {
+                getWalletById(id).sync(getBlockchainById(blockChainId), BdkProgress)
+                result.resolve(true)
+            }.start()
         } catch (error: Throwable) {
             result.reject("Sync wallet error", error.localizedMessage, error)
         }
diff --git a/ios/BdkRnModule.swift b/ios/BdkRnModule.swift
index f96ce44..1323e47 100644
--- a/ios/BdkRnModule.swift
+++ b/ios/BdkRnModule.swift
@@ -494,11 +494,13 @@ class BdkRnModule: NSObject {
         resolve: @escaping RCTPromiseResolveBlock,
         reject: @escaping RCTPromiseRejectBlock
     ) {
-        do {
-            try getWalletById(id: id).sync(blockchain: getBlockchainById(id: blockChainId), progress: BdkProgress())
-            resolve(true)
-        } catch let error {
-            reject("Sync wallet error", "\(error)", error)
+        DispatchQueue.main.async { [self] in
+            do {
+                try getWalletById(id: id).sync(blockchain: self.getBlockchainById(id: blockChainId), progress: BdkProgress())
+                resolve(true)
+            } catch let error {
+                reject("Sync wallet error", "\(error)", error)
+            }
         }
     }