diff --git a/Example/Podfile b/Example/Podfile
index 44cd096..70414d9 100644
--- a/Example/Podfile
+++ b/Example/Podfile
@@ -1,4 +1,4 @@
-platform :ios, '11.0'
+platform :ios, '12.0'
 use_frameworks!
 
 target 'TrustSDK_Example' do
diff --git a/Example/Podfile.lock b/Example/Podfile.lock
index a78faba..5596eb0 100644
--- a/Example/Podfile.lock
+++ b/Example/Podfile.lock
@@ -1,14 +1,14 @@
 PODS:
   - BigInt (5.2.0)
-  - CryptoSwift (1.3.8)
-  - SwiftLint (0.42.0)
-  - SwiftProtobuf (1.14.0)
+  - CryptoSwift (1.4.0)
+  - SwiftLint (0.43.1)
+  - SwiftProtobuf (1.17.0)
   - TrustSDK/Client (1.4.7):
     - BigInt
     - TrustWalletCore/Types
   - TrustSDK/Wallet (1.4.7):
     - TrustSDK/Client
-  - TrustWalletCore/Types (2.5.3):
+  - TrustWalletCore/Types (2.6.8):
     - SwiftProtobuf
 
 DEPENDENCIES:
@@ -30,12 +30,12 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   BigInt: f668a80089607f521586bbe29513d708491ef2f7
-  CryptoSwift: 01b0f0cba1d5c212e5a335ff6c054fb75a204f00
-  SwiftLint: 4fa9579c63416865179bc416f0a92d55f009600d
-  SwiftProtobuf: ed465ed18402f998fd117f631da27e0168e6b59c
+  CryptoSwift: 7cc902df1784de3b389a387756c7d710f197730c
+  SwiftLint: 99f82d07b837b942dd563c668de129a03fc3fb52
+  SwiftProtobuf: 9c85136c6ba74b0a1b84279dbf0f6db8efb714e0
   TrustSDK: e1b5f33d3df28044a6b2ed07407f640b227e7f0c
-  TrustWalletCore: fbe68202e6e2bbac217a35f1af170bf3cc8a37cd
+  TrustWalletCore: 182a5dc39512187878d5968b8a9a25406b181d96
 
-PODFILE CHECKSUM: 3cd8abdd82cb2787c7ceb3f28154a7ede783339d
+PODFILE CHECKSUM: c172da0a8f94e804c320befae5bffabca7cc177f
 
-COCOAPODS: 1.10.0
+COCOAPODS: 1.10.1
diff --git a/Example/TrustSDK.xcodeproj/xcshareddata/xcschemes/TrustSDK-Example.xcscheme b/Example/TrustSDK.xcodeproj/xcshareddata/xcschemes/TrustSDK-Example.xcscheme
index f8c3f31..9c8deaa 100644
--- a/Example/TrustSDK.xcodeproj/xcshareddata/xcschemes/TrustSDK-Example.xcscheme
+++ b/Example/TrustSDK.xcodeproj/xcshareddata/xcschemes/TrustSDK-Example.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1220"
+   LastUpgradeVersion = "1250"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/TrustSDK/Classes/Wallet/WalletSDK.swift b/TrustSDK/Classes/Wallet/WalletSDK.swift
index b2fc9f2..ecadfee 100644
--- a/TrustSDK/Classes/Wallet/WalletSDK.swift
+++ b/TrustSDK/Classes/Wallet/WalletSDK.swift
@@ -33,6 +33,6 @@ public struct WalletSDK {
     }
 }
 
-public protocol WalletSDKDelegate: class {
+public protocol WalletSDKDelegate: AnyObject {
     func didReceive(request: WalletSDK.Request, callback: @escaping ((WalletSDK.Response) -> Void))
 }