diff --git a/Sources/web3swift/KeystoreManager/BIP32HDNode.swift b/Sources/web3swift/KeystoreManager/BIP32HDNode.swift
index 267b7f024..e76cf7017 100755
--- a/Sources/web3swift/KeystoreManager/BIP32HDNode.swift
+++ b/Sources/web3swift/KeystoreManager/BIP32HDNode.swift
@@ -100,7 +100,7 @@ public class HDNode {
     public init?(seed: Data) {
         guard seed.count >= 16 else {return nil}
         let hmacKey = "Bitcoin seed".data(using: .ascii)!
-        let hmac:Authenticator = HMAC(key: hmacKey.bytes, variant: HMAC.Variant.sha512)
+        let hmac:Authenticator = HMAC(key: hmacKey.bytes, variant: HMAC.Variant.sha2(.sha512))
         guard let entropy = try? hmac.authenticate(seed.bytes) else {return nil}
         guard entropy.count == 64 else { return nil}
         let I_L = entropy[0..<32]
@@ -135,7 +135,7 @@ extension HDNode {
                     if trueIndex < (UInt32(1) << 31) {
                         trueIndex = trueIndex + (UInt32(1) << 31)
                     }
-                    let hmac:Authenticator = HMAC(key: self.chaincode.bytes, variant: .sha512)
+                    let hmac:Authenticator = HMAC(key: self.chaincode.bytes, variant: .sha2(.sha512))
                     var inputForHMAC = Data()
                     inputForHMAC.append(Data([UInt8(0x00)]))
                     inputForHMAC.append(self.privateKey!)
@@ -145,7 +145,7 @@ extension HDNode {
                     entropy = ent
                 } else {
                     trueIndex = index
-                    let hmac:Authenticator = HMAC(key: self.chaincode.bytes, variant: .sha512)
+                    let hmac:Authenticator = HMAC(key: self.chaincode.bytes, variant: .sha2(.sha512))
                     var inputForHMAC = Data()
                     inputForHMAC.append(self.publicKey)
                     inputForHMAC.append(trueIndex.serialize32())
@@ -203,7 +203,7 @@ extension HDNode {
             if index >= (UInt32(1) << 31) || hardened {
                 return nil // no derivation of hardened public key from extended public key
             } else {
-                let hmac:Authenticator = HMAC(key: self.chaincode.bytes, variant: .sha512)
+                let hmac:Authenticator = HMAC(key: self.chaincode.bytes, variant: .sha2(.sha512))
                 var inputForHMAC = Data()
                 inputForHMAC.append(self.publicKey)
                 inputForHMAC.append(index.serialize32())
diff --git a/Sources/web3swift/KeystoreManager/BIP32Keystore.swift b/Sources/web3swift/KeystoreManager/BIP32Keystore.swift
index 9fc8f8935..929ce8436 100755
--- a/Sources/web3swift/KeystoreManager/BIP32Keystore.swift
+++ b/Sources/web3swift/KeystoreManager/BIP32Keystore.swift
@@ -297,11 +297,11 @@ public class BIP32Keystore: AbstractKeystore {
             var hashVariant: HMAC.Variant?;
             switch algo {
             case "hmac-sha256":
-                hashVariant = HMAC.Variant.sha256
+                hashVariant = HMAC.Variant.sha2(.sha256)
             case "hmac-sha384":
-                hashVariant = HMAC.Variant.sha384
+                hashVariant = HMAC.Variant.sha2(.sha384)
             case "hmac-sha512":
-                hashVariant = HMAC.Variant.sha512
+                hashVariant = HMAC.Variant.sha2(.sha512)
             default:
                 hashVariant = nil
             }
diff --git a/Sources/web3swift/KeystoreManager/BIP39.swift b/Sources/web3swift/KeystoreManager/BIP39.swift
index 93df2f923..1cb6ff988 100755
--- a/Sources/web3swift/KeystoreManager/BIP39.swift
+++ b/Sources/web3swift/KeystoreManager/BIP39.swift
@@ -150,7 +150,7 @@ public class BIP39 {
         guard let mnemData = mnemonics.decomposedStringWithCompatibilityMapping.data(using: .utf8) else {return nil}
         let salt = "mnemonic" + password
         guard let saltData = salt.decomposedStringWithCompatibilityMapping.data(using: .utf8) else {return nil}
-        guard let seedArray = try? PKCS5.PBKDF2(password: mnemData.bytes, salt: saltData.bytes, iterations: 2048, keyLength: 64, variant: HMAC.Variant.sha512).calculate() else {return nil}
+        guard let seedArray = try? PKCS5.PBKDF2(password: mnemData.bytes, salt: saltData.bytes, iterations: 2048, keyLength: 64, variant: HMAC.Variant.sha2(.sha512)).calculate() else {return nil}
 //        let seed = Data(bytes:seedArray)
         let seed = Data(seedArray)
         return seed
diff --git a/Sources/web3swift/KeystoreManager/EthereumKeystoreV3.swift b/Sources/web3swift/KeystoreManager/EthereumKeystoreV3.swift
index 775268a74..84cebdd3f 100755
--- a/Sources/web3swift/KeystoreManager/EthereumKeystoreV3.swift
+++ b/Sources/web3swift/KeystoreManager/EthereumKeystoreV3.swift
@@ -182,11 +182,11 @@ public class EthereumKeystoreV3: AbstractKeystore {
             var hashVariant: HMAC.Variant?;
             switch algo {
             case "hmac-sha256":
-                hashVariant = HMAC.Variant.sha256
+                hashVariant = HMAC.Variant.sha2(.sha256)
             case "hmac-sha384":
-                hashVariant = HMAC.Variant.sha384
+                hashVariant = HMAC.Variant.sha2(.sha384)
             case "hmac-sha512":
-                hashVariant = HMAC.Variant.sha512
+                hashVariant = HMAC.Variant.sha2(.sha512)
             default:
                 hashVariant = nil
             }