diff --git a/MD5Context.cs b/MD5Context.cs
index eaf4f9aee..7bb228590 100644
--- a/MD5Context.cs
+++ b/MD5Context.cs
@@ -30,6 +30,7 @@
 // Copyright © 2011-2021 Natalia Portillo
 // ****************************************************************************/
 
+using System;
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
@@ -60,7 +61,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a byte array of the hash value.</summary>
         public byte[] Final()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
 
             return _provider.Hash;
         }
@@ -69,7 +70,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a hexadecimal representation of the hash value.</summary>
         public string End()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
             var md5Output = new StringBuilder();
 
             foreach(byte h in _provider.Hash)
diff --git a/SHA1Context.cs b/SHA1Context.cs
index 59c708f66..bccf5eafa 100644
--- a/SHA1Context.cs
+++ b/SHA1Context.cs
@@ -30,6 +30,7 @@
 // Copyright © 2011-2021 Natalia Portillo
 // ****************************************************************************/
 
+using System;
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
@@ -60,7 +61,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a byte array of the hash value.</summary>
         public byte[] Final()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
 
             return _provider.Hash;
         }
@@ -69,7 +70,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a hexadecimal representation of the hash value.</summary>
         public string End()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
             var sha1Output = new StringBuilder();
 
             foreach(byte h in _provider.Hash)
diff --git a/SHA256Context.cs b/SHA256Context.cs
index 5d69ae756..dd5d0fa44 100644
--- a/SHA256Context.cs
+++ b/SHA256Context.cs
@@ -30,6 +30,7 @@
 // Copyright © 2011-2021 Natalia Portillo
 // ****************************************************************************/
 
+using System;
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
@@ -60,7 +61,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a byte array of the hash value.</summary>
         public byte[] Final()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
 
             return _provider.Hash;
         }
@@ -69,7 +70,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a hexadecimal representation of the hash value.</summary>
         public string End()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
             var sha256Output = new StringBuilder();
 
             foreach(byte h in _provider.Hash)
diff --git a/SHA384Context.cs b/SHA384Context.cs
index 4610eff44..01dd52a82 100644
--- a/SHA384Context.cs
+++ b/SHA384Context.cs
@@ -30,6 +30,7 @@
 // Copyright © 2011-2021 Natalia Portillo
 // ****************************************************************************/
 
+using System;
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
@@ -60,7 +61,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a byte array of the hash value.</summary>
         public byte[] Final()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
 
             return _provider.Hash;
         }
@@ -69,7 +70,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a hexadecimal representation of the hash value.</summary>
         public string End()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
             var sha384Output = new StringBuilder();
 
             foreach(byte h in _provider.Hash)
diff --git a/SHA512Context.cs b/SHA512Context.cs
index 5b7ef4c80..853561956 100644
--- a/SHA512Context.cs
+++ b/SHA512Context.cs
@@ -30,6 +30,7 @@
 // Copyright © 2011-2021 Natalia Portillo
 // ****************************************************************************/
 
+using System;
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
@@ -60,7 +61,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a byte array of the hash value.</summary>
         public byte[] Final()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
 
             return _provider.Hash;
         }
@@ -69,7 +70,7 @@ namespace Aaru.Checksums
         /// <summary>Returns a hexadecimal representation of the hash value.</summary>
         public string End()
         {
-            _provider.TransformFinalBlock(new byte[0], 0, 0);
+            _provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
             var sha512Output = new StringBuilder();
 
             foreach(byte h in _provider.Hash)