diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5be03a4..c532a0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 4.2.0
+
+- Correctly handle key not found exception when applying patch document to dictionary https://github.com/Havunen/SystemTextJsonPatch/pull/40
+- Respect STJ options PropertyNameCaseInsensitive setting https://github.com/Havunen/SystemTextJsonPatch/pull/42
+- Internal dependencies updated
+
 ## 4.1.0
 
 - Adds .NET 9 support
diff --git a/README.md b/README.md
index 3a50f71..295ecb4 100644
--- a/README.md
+++ b/README.md
@@ -67,16 +67,16 @@ This test deserializes a JSON patch document of 8 operations and applies the cha
 
 See [SystemTextJsonPatch.Benchmark](https://github.com/Havunen/SystemTextJsonPatch/tree/main/SystemTextJsonPatch.Benchmark) for more details.
 
-BenchmarkDotNet v0.14.0, Windows 11 (10.0.22631.4460/23H2/2023Update/SunValley3)
+BenchmarkDotNet v0.14.0, Windows 11 (10.0.26100.2605)
 AMD Ryzen 9 5950X, 1 CPU, 32 logical and 16 physical cores
-.NET SDK 9.0.100
+.NET SDK 9.0.200-preview.0.24575.35
   [Host]     : .NET 9.0.0 (9.0.24.52809), X64 RyuJIT AVX2
-  Job-ZXROHW : .NET 9.0.0 (9.0.24.52809), X64 RyuJIT AVX2
+  Job-ZCWSQV : .NET 9.0.0 (9.0.24.52809), X64 RyuJIT AVX2
 
 WarmupCount=2
 
 | Method              | Mean       | Error      | StdDev     | Gen0   | Gen1   | Allocated |
 |-------------------- |-----------:|-----------:|-----------:|-------:|-------:|----------:|
-| SystemTextJsonPatch |   3.641 us |  0.0168 us |  0.0149 us | 0.2747 |      - |   4.63 KB |
-| MarvinJsonPatch     | 701.319 us | 13.7540 us | 16.8912 us | 3.9063 | 1.9531 |   95.3 KB |
-| AspNetCoreJsonPatch |  14.871 us |  0.2871 us |  0.2820 us | 2.6245 | 0.0916 |  43.07 KB |
\ No newline at end of file
+| SystemTextJsonPatch |   3.909 us |  0.0616 us |  0.0576 us | 0.2747 |      - |   4.63 KB |
+| MarvinJsonPatch     | 741.280 us | 14.2699 us | 11.9160 us | 3.9063 | 1.9531 |  95.09 KB |
+| AspNetCoreJsonPatch |  15.268 us |  0.2227 us |  0.2084 us | 2.6245 | 0.0916 |  43.07 KB |
\ No newline at end of file
diff --git a/SystemTextJsonPatch.Benchmark/SystemTextJsonPatch.Benchmark.csproj b/SystemTextJsonPatch.Benchmark/SystemTextJsonPatch.Benchmark.csproj
index 70dcebb..78e04be 100644
--- a/SystemTextJsonPatch.Benchmark/SystemTextJsonPatch.Benchmark.csproj
+++ b/SystemTextJsonPatch.Benchmark/SystemTextJsonPatch.Benchmark.csproj
@@ -12,7 +12,7 @@
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
     <PackageReference Include="Marvin.JsonPatch" Version="2.2.1" />
-    <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="9.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="9.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>
 
diff --git a/SystemTextJsonPatch.Tests/SystemTextJsonPatch.Tests.csproj b/SystemTextJsonPatch.Tests/SystemTextJsonPatch.Tests.csproj
index bebeec7..5bd14b7 100644
--- a/SystemTextJsonPatch.Tests/SystemTextJsonPatch.Tests.csproj
+++ b/SystemTextJsonPatch.Tests/SystemTextJsonPatch.Tests.csproj
@@ -15,11 +15,11 @@
 
   <ItemGroup>
     <PackageReference Include="JUnitTestLogger" Version="1.1.0" />
-    <PackageReference Include="Microsoft.Net.Test.Sdk" Version="17.11.1" />
-    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="Microsoft.Net.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
     <!-- use latest NewtonSoft package, hides Microsoft.Net.Test.Sdk -> Microsoft.TestPlatform.TestHost refs NewtonSoft.Json >= 9.0 -->
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/SystemTextJsonPatch/SystemTextJsonPatch.csproj b/SystemTextJsonPatch/SystemTextJsonPatch.csproj
index c26a7d7..8c001b9 100644
--- a/SystemTextJsonPatch/SystemTextJsonPatch.csproj
+++ b/SystemTextJsonPatch/SystemTextJsonPatch.csproj
@@ -7,7 +7,7 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>aspnetcore;json;jsonpatch;system.text.json;rfc6902;</PackageTags>
     <LangVersion>12</LangVersion>
-    <Version>4.1.0</Version>
+    <Version>4.2.0</Version>
     <RepositoryUrl>https://github.com/Havunen/SystemTextJsonPatch.git</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <AnalysisLevel>9.0-all</AnalysisLevel>
@@ -36,7 +36,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(targetframework)' == 'netstandard2.0'">
-    <PackageReference Include="System.Text.Json" Version="9.0.0" />
+    <PackageReference Include="System.Text.Json" Version="9.0.1" />
   </ItemGroup>
 
   <ItemGroup>