diff --git a/Pilz.Cryptography/SimpleStringCrypter.cs b/Pilz.Cryptography/SimpleStringCrypter.cs
index 1a74db6..3b08c9e 100644
--- a/Pilz.Cryptography/SimpleStringCrypter.cs
+++ b/Pilz.Cryptography/SimpleStringCrypter.cs
@@ -10,7 +10,7 @@ namespace Pilz.Cryptography
 {
     public class SimpleStringCrypter : ICrypter
     {
-        private TripleDES TripleDes;
+        private readonly TripleDES TripleDes;
         public Encoding TextEncoding { get; private set; } = Encoding.Default;
 
         public SimpleStringCrypter() : this(string.Empty)
@@ -32,8 +32,8 @@ namespace Pilz.Cryptography
         private byte[] TruncateHash(string key, int length)
         {
             SHA1 sha1CryptoServiceProvider = SHA1.Create();
-            byte[] bytes = TextEncoding.GetBytes(key);
-            byte[] array = sha1CryptoServiceProvider.ComputeHash(bytes);
+            var bytes = TextEncoding.GetBytes(key);
+            var array = sha1CryptoServiceProvider.ComputeHash(bytes);
 
             var output = new byte[length];
             var lowerLength = Math.Min(array.Length, output.Length);
@@ -46,9 +46,9 @@ namespace Pilz.Cryptography
 
         private string EncryptData(string plaintext)
         {
-            byte[] bytes = TextEncoding.GetBytes(plaintext);
-            MemoryStream memoryStream = new MemoryStream();
-            CryptoStream cryptoStream = new CryptoStream(memoryStream, TripleDes.CreateEncryptor(), CryptoStreamMode.Write);
+            var bytes = TextEncoding.GetBytes(plaintext);
+            using var memoryStream = new MemoryStream();
+            using var cryptoStream = new CryptoStream(memoryStream, TripleDes.CreateEncryptor(), CryptoStreamMode.Write);
             cryptoStream.Write(bytes, 0, bytes.Length);
             cryptoStream.FlushFinalBlock();
             return Convert.ToBase64String(memoryStream.ToArray());
@@ -56,9 +56,9 @@ namespace Pilz.Cryptography
 
         private string DecryptData(string encryptedtext)
         {
-            byte[] array = Convert.FromBase64String(encryptedtext);
-            MemoryStream memoryStream = new MemoryStream();
-            CryptoStream cryptoStream = new CryptoStream(memoryStream, TripleDes.CreateDecryptor(), CryptoStreamMode.Write);
+            var array = Convert.FromBase64String(encryptedtext);
+            using var memoryStream = new MemoryStream();
+            using var cryptoStream = new CryptoStream(memoryStream, TripleDes.CreateDecryptor(), CryptoStreamMode.Write);
             cryptoStream.Write(array, 0, array.Length);
             cryptoStream.FlushFinalBlock();
             return TextEncoding.GetString(memoryStream.ToArray());
diff --git a/Pilz.Plugins.Advanced/Pilz.Plugins.Advanced.csproj b/Pilz.Plugins.Advanced/Pilz.Plugins.Advanced.csproj
index e8c2682..504135e 100644
--- a/Pilz.Plugins.Advanced/Pilz.Plugins.Advanced.csproj
+++ b/Pilz.Plugins.Advanced/Pilz.Plugins.Advanced.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
-    <Version>2.5.1</Version>
+    <Version>2.5.2</Version>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\Pilz.UI.Telerik.SymbolFactory\Pilz.UI.Telerik.SymbolFactory.csproj" />