diff --git a/src/Pandatech.Crypto.Tests/GZipTests.cs b/src/Pandatech.Crypto.Tests/GZipTests.cs
index 9b22a17..8ccafdb 100644
--- a/src/Pandatech.Crypto.Tests/GZipTests.cs
+++ b/src/Pandatech.Crypto.Tests/GZipTests.cs
@@ -1,4 +1,5 @@
 using System.Text;
+using System.Text.Json.Serialization;
 
 namespace Pandatech.Crypto.Tests;
 
@@ -6,8 +7,8 @@ public class GZipTests
 {
     private class TestClass
     {
-        public int Id { get; init; }
-        public string? Name { get; init; }
+        public int SomeLongId { get; init; }
+        public string? FullName { get; init; }
     }
 
     [Fact]
@@ -15,8 +16,8 @@ public void CompressAndDecompress_ShouldReturnOriginalObject()
     {
         var originalObject = new TestClass
         {
-            Id = 1,
-            Name = "Test"
+            SomeLongId = 1,
+            FullName = "Test"
         };
 
         // Act
@@ -25,8 +26,28 @@ public void CompressAndDecompress_ShouldReturnOriginalObject()
 
         // Assert
         Assert.NotNull(decompressedObject);
-        Assert.Equal(originalObject.Id, decompressedObject.Id);
-        Assert.Equal(originalObject.Name, decompressedObject.Name);
+        Assert.Equal(originalObject.SomeLongId, decompressedObject.SomeLongId);
+        Assert.Equal(originalObject.FullName, decompressedObject.FullName);
+    }
+
+    [Fact]
+    public void CompressAndDecompress_ShouldReturnOriginalObject2()
+    {
+        var originalObject = new TestClass
+        {
+            SomeLongId = 1,
+            FullName = "Test"
+        };
+
+        // Act
+        var compressedData = GZip.Compress(originalObject);
+        var stringData = Convert.ToBase64String(compressedData);
+        var decompressedObject = GZip.Decompress<TestClass>(stringData);
+
+        // Assert
+        Assert.NotNull(decompressedObject);
+        Assert.Equal(originalObject.SomeLongId, decompressedObject.SomeLongId);
+        Assert.Equal(originalObject.FullName, decompressedObject.FullName);
     }
 
     [Fact]
@@ -94,7 +115,7 @@ public void CompressAndDecompress_ByteArray_ReturnsOriginalData()
     {
         // Arrange
         var input = Encoding.UTF8.GetBytes("Sample text for compression");
-    
+
         // Act
         var compressed = GZip.Compress(input);
         var decompressed = GZip.Decompress(compressed);
diff --git a/src/Pandatech.Crypto.Tests/HostBuilderTests.cs b/src/Pandatech.Crypto.Tests/HostBuilderTests.cs
index 45cb08f..18395b8 100644
--- a/src/Pandatech.Crypto.Tests/HostBuilderTests.cs
+++ b/src/Pandatech.Crypto.Tests/HostBuilderTests.cs
@@ -90,5 +90,21 @@ public void AddPandatechCryptoArgon2Id_RegistersAsSingleton()
     
         Assert.Same(argon2IdInstance1, argon2IdInstance2);
     }
+    
+    
+    [Fact]
+    public void AddPandatechCryptoArgon2Id_RegistersServicesCorrectly2()
+    {
+        // Arrange
+        var services = new ServiceCollection();
+
+        // Act
+        services.AddPandatechCryptoArgon2Id();
+
+        // Assert
+        var serviceProvider = services.BuildServiceProvider();
+        Assert.NotNull(serviceProvider.GetService<Argon2IdOptions>());
+        Assert.NotNull(serviceProvider.GetService<Argon2Id>());
+    }
 
 }
\ No newline at end of file
diff --git a/src/Pandatech.Crypto/GZip.cs b/src/Pandatech.Crypto/GZip.cs
index 4902aff..598fdbd 100644
--- a/src/Pandatech.Crypto/GZip.cs
+++ b/src/Pandatech.Crypto/GZip.cs
@@ -2,17 +2,19 @@
 using System.Text;
 using System.Text.Json;
 
+
+
 namespace Pandatech.Crypto;
 
 public static class GZip
 {
+    private static readonly JsonSerializerOptions JsonSerializerOptions = new()
+    {
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+    };
     public static byte[] Compress<T>(T obj)
     {
-        var options = new JsonSerializerOptions
-        {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
-        };
-        var jsonString = JsonSerializer.Serialize(obj, options);
+        var jsonString = JsonSerializer.Serialize(obj, JsonSerializerOptions);
         return Compress(jsonString);
     }
 
@@ -45,8 +47,16 @@ public static byte[] Compress(byte[] data)
 
     public static T? Decompress<T>(byte[] compressedData)
     {
-        var jsonString = Decompress(compressedData);
-        return JsonSerializer.Deserialize<T>(jsonString);
+        var decompressed = Decompress(compressedData);
+        var jsonString = Encoding.UTF8.GetString(decompressed);
+        return JsonSerializer.Deserialize<T>(jsonString, JsonSerializerOptions);
+    }
+    
+    public static T? Decompress<T>(string compressedData)
+    {
+        var decompressed = Decompress(compressedData);
+        var jsonString = Encoding.UTF8.GetString(decompressed);
+        return JsonSerializer.Deserialize<T>(jsonString, JsonSerializerOptions);
     }
 
     public static byte[] Decompress(string compressedBase64)
diff --git a/src/Pandatech.Crypto/Pandatech.Crypto.csproj b/src/Pandatech.Crypto/Pandatech.Crypto.csproj
index bb006eb..f61e7ba 100644
--- a/src/Pandatech.Crypto/Pandatech.Crypto.csproj
+++ b/src/Pandatech.Crypto/Pandatech.Crypto.csproj
@@ -8,12 +8,12 @@
         <Copyright>MIT</Copyright>
         <PackageIcon>pandatech.png</PackageIcon>
         <PackageReadmeFile>Readme.md</PackageReadmeFile>
-        <Version>2.3.0</Version>
+        <Version>2.3.1</Version>
         <Title>Pandatech.Crypto</Title>
         <PackageTags>Pandatech, library, encryption, hash, algorythms, security</PackageTags>
         <Description>PandaTech.Crypto is a .NET library simplifying common cryptograhic functions.</Description>
         <RepositoryUrl>https://github.com/PandaTechAM/be-lib-pandatech-crypto</RepositoryUrl>
-        <PackageReleaseNotes>Gzip underlying implementation change and Password symbols</PackageReleaseNotes>
+        <PackageReleaseNotes>Gzip serializer fix</PackageReleaseNotes>
     </PropertyGroup>
 
     <ItemGroup>