diff --git a/Sources/Web3Core/RLP/RLP.swift b/Sources/Web3Core/RLP/RLP.swift
index 588432db7..c60a0afde 100755
--- a/Sources/Web3Core/RLP/RLP.swift
+++ b/Sources/Web3Core/RLP/RLP.swift
@@ -113,10 +113,10 @@ public struct RLP {
     }
 
     // FIXME: Make encode generic to avoid casting it's argument to [AnyObject]
-    internal static func encode(_ elements: [AnyObject]) -> Data? {
+    internal static func encode(_ elements: [Any?]) -> Data? {
         var encodedData = Data()
         for e in elements {
-            if let encoded = encode(e) {
+            if let encoded = encode(e as AnyObject) {
                 encodedData.append(encoded)
             } else {
                 guard let asArray = e as? [AnyObject] else {return nil}
diff --git a/Sources/Web3Core/Transaction/Envelope/EIP1559Envelope.swift b/Sources/Web3Core/Transaction/Envelope/EIP1559Envelope.swift
index 673af57ce..052b931d9 100644
--- a/Sources/Web3Core/Transaction/Envelope/EIP1559Envelope.swift
+++ b/Sources/Web3Core/Transaction/Envelope/EIP1559Envelope.swift
@@ -245,14 +245,14 @@ extension EIP1559Envelope {
 //    }
 
     public func encode(for type: EncodeType = .transaction) -> Data? {
-        let fields: [AnyObject]
+        let fields: [Any?]
         let list = accessList.map { $0.encodeAsList() as AnyObject }
 
         switch type {
         case .transaction:
-            fields = [chainID, nonce, maxPriorityFeePerGas, maxFeePerGas, gasLimit, to.addressData, value, data, list, v, r, s] as [AnyObject]
+            fields = [chainID, nonce, maxPriorityFeePerGas, maxFeePerGas, gasLimit, to.addressData, value, data, list, v, r, s]
         case .signature:
-            fields = [chainID, nonce, maxPriorityFeePerGas, maxFeePerGas, gasLimit, to.addressData, value, data, list] as [AnyObject]
+            fields = [chainID, nonce, maxPriorityFeePerGas, maxFeePerGas, gasLimit, to.addressData, value, data, list]
         }
         guard var result = RLP.encode(fields) else { return nil }
         result.insert(UInt8(self.type.rawValue), at: 0)
diff --git a/Sources/Web3Core/Transaction/Envelope/EIP2930Envelope.swift b/Sources/Web3Core/Transaction/Envelope/EIP2930Envelope.swift
index fe4bcfb46..93cfcbfb7 100644
--- a/Sources/Web3Core/Transaction/Envelope/EIP2930Envelope.swift
+++ b/Sources/Web3Core/Transaction/Envelope/EIP2930Envelope.swift
@@ -206,14 +206,14 @@ extension EIP2930Envelope {
     }
 
     public func encode(for type: EncodeType = .transaction) -> Data? {
-        let fields: [AnyObject]
+        let fields: [Any?]
         let list = accessList.map { $0.encodeAsList() as AnyObject }
 
         switch type {
         case .transaction:
-            fields = [chainID, nonce, gasPrice, gasLimit, to.addressData, value, data, list, v, r, s] as [AnyObject]
+            fields = [chainID, nonce, gasPrice, gasLimit, to.addressData, value, data, list, v, r, s]
         case .signature:
-            fields = [chainID, nonce, gasPrice, gasLimit, to.addressData, value, data, list] as [AnyObject]
+            fields = [chainID, nonce, gasPrice, gasLimit, to.addressData, value, data, list]
         }
         guard var result = RLP.encode(fields) else { return nil }
         result.insert(UInt8(self.type.rawValue), at: 0)
diff --git a/Sources/Web3Core/Transaction/Envelope/LegacyEnvelope.swift b/Sources/Web3Core/Transaction/Envelope/LegacyEnvelope.swift
index b1c2c7e4c..121ecb63b 100644
--- a/Sources/Web3Core/Transaction/Envelope/LegacyEnvelope.swift
+++ b/Sources/Web3Core/Transaction/Envelope/LegacyEnvelope.swift
@@ -192,15 +192,15 @@ extension LegacyEnvelope {
 //    }
 
     public func encode(for type: EncodeType = .transaction) -> Data? {
-        let fields: [AnyObject]
+        let fields: [Any?]
         switch type {
         case .transaction:
-            fields = [nonce, gasPrice, gasLimit, to.addressData, value, data, v, r, s] as [AnyObject]
+            fields = [nonce, gasPrice, gasLimit, to.addressData, value, data, v, r, s]
         case .signature:
             if let chainID = chainID, chainID != 0 {
-                fields = [nonce, gasPrice, gasLimit, to.addressData, value, data, chainID, BigUInt(0), BigUInt(0)] as [AnyObject]
+                fields = [nonce, gasPrice, gasLimit, to.addressData, value, data, chainID, BigUInt(0), BigUInt(0)]
             } else {
-                fields = [nonce, gasPrice, gasLimit, to.addressData, value, data] as [AnyObject]
+                fields = [nonce, gasPrice, gasLimit, to.addressData, value, data]
             }
         }
         return RLP.encode(fields)