diff --git a/Sources/WalletConnectKMS/Keychain/KeychainStorage.swift b/Sources/WalletConnectKMS/Keychain/KeychainStorage.swift
index f52f4c828..d354cad91 100644
--- a/Sources/WalletConnectKMS/Keychain/KeychainStorage.swift
+++ b/Sources/WalletConnectKMS/Keychain/KeychainStorage.swift
@@ -55,7 +55,7 @@ public final class KeychainStorage: KeychainStorageProtocol {
         case errSecSuccess:
             return item as? Data
         case errSecItemNotFound:
-            return tryMigrateAttrAccessible(key: key) // TODO: Replace with nil once migration period ends
+            return tryMigrateAttrAccessibleOnRead(key: key) // TODO: Replace with nil once migration period ends
         default:
             throw KeychainError(status)
         }
@@ -70,8 +70,13 @@ public final class KeychainStorage: KeychainStorageProtocol {
         let attributes = [kSecValueData: data]
 
         let status = secItem.update(query as CFDictionary, attributes as CFDictionary)
-
-        guard status == errSecSuccess else {
+        
+        switch status {
+        case errSecSuccess:
+            return
+        case errSecItemNotFound:
+            try tryMigrateAttrAccessibleOnUpdate(data: data, key: key) // TODO: Remove once migration period ends
+        default:
             throw KeychainError(status)
         }
     }
@@ -108,7 +113,7 @@ public final class KeychainStorage: KeychainStorageProtocol {
         ]
     }
 
-    private func tryMigrateAttrAccessible(key: String) -> Data? {
+    private func tryMigrateAttrAccessibleOnRead(key: String) -> Data? {
         var updateQuery = buildBaseServiceQuery(for: key)
         updateQuery[kSecAttrAccessible] = kSecAttrAccessibleWhenUnlockedThisDeviceOnly
 
@@ -127,4 +132,25 @@ public final class KeychainStorage: KeychainStorageProtocol {
 
         return item as? Data
     }
+
+    private func tryMigrateAttrAccessibleOnUpdate(data: Data, key: String) throws {
+        var updateAccessQuery = buildBaseServiceQuery(for: key)
+        updateAccessQuery[kSecAttrAccessible] = kSecAttrAccessibleWhenUnlockedThisDeviceOnly
+
+        let accessAttributes = [kSecAttrAccessible: kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly]
+        let accessStatus = secItem.update(updateAccessQuery as CFDictionary, accessAttributes as CFDictionary)
+
+        guard accessStatus == errSecSuccess else {
+            throw KeychainError.itemNotFound
+        }
+
+        let updateQuery = buildBaseServiceQuery(for: key)
+        let updateAttributes = [kSecValueData: data]
+
+        let updateStatus = secItem.update(updateQuery as CFDictionary, updateAttributes as CFDictionary)
+
+        guard updateStatus == errSecSuccess else {
+            throw KeychainError.itemNotFound
+        }
+    }
 }