diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/README.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/README.mustache
index a1a108d8a87..5f2713355d0 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/README.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/README.mustache
@@ -28,15 +28,15 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 ## Dependencies
 
 {{#useRestSharp}}
-- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.4 or later
+- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.7 or later
 {{/useRestSharp}}
 - [Json.NET](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
-- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.8.0 or later
 {{#useCompareNetObjects}}
 - [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later
 {{/useCompareNetObjects}}
 {{#validatable}}
-- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 5.0.0 or later
 {{/validatable}}
 
 The DLLs included in the package may not be the latest version. We recommend using [NuGet](https://docs.nuget.org/consume/installing-nuget) to obtain the latest version of the packages:
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache
index ead6f21f943..cdc1b85e584 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache
@@ -25,16 +25,16 @@
     {{#useCompareNetObjects}}
     <PackageReference Include="CompareNETObjects" Version="4.61.0" />
     {{/useCompareNetObjects}}
-    <PackageReference Include="JsonSubTypes" Version="1.7.0" />
+    <PackageReference Include="JsonSubTypes" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
       {{#useRestSharp}}
-    <PackageReference Include="RestSharp" Version="106.11.4" />
+    <PackageReference Include="RestSharp" Version="106.11.7" />
       {{/useRestSharp}}
       {{#supportsRetry}}
-    <PackageReference Include="Polly" Version="7.2.0" />
+    <PackageReference Include="Polly" Version="7.2.1" />
       {{/supportsRetry}}
     {{#validatable}}
-    <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
+    <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
     {{/validatable}}
   </ItemGroup>
 
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/nuspec.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/nuspec.mustache
index b6a4a2f3647..66254acffd4 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/nuspec.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/nuspec.mustache
@@ -31,13 +31,13 @@
         <dependencies>
 
             <dependency id="Newtonsoft.Json" version="12.0.3" />
-            <dependency id="RestSharp" version="106.11.4" />
+            <dependency id="RestSharp" version="106.11.7" />
             {{#useCompareNetObjects}}
             <dependency id="CompareNETObjects" version="4.61.0" />
             {{/useCompareNetObjects}}
-            <dependency id="JsonSubTypes" version="1.7.0" />
+            <dependency id="JsonSubTypes" version="1.8.0" />
             {{#validatable}}
-            <dependency id="System.ComponentModel.Annotations" version="4.7.0" />
+            <dependency id="System.ComponentModel.Annotations" version="5.0.0" />
             {{/validatable}}
 
         </dependencies>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/README.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/README.md
index ae6bd0d6d27..a38ef843b09 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/README.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/README.md
@@ -18,9 +18,9 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 ## Dependencies
 
 - [Json.NET](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
-- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.8.0 or later
 - [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later
-- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 5.0.0 or later
 
 The DLLs included in the package may not be the latest version. We recommend using [NuGet](https://docs.nuget.org/consume/installing-nuget) to obtain the latest version of the packages:
 ```
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index b8ff8813692..c415e6768bc 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -21,10 +21,10 @@
 
   <ItemGroup>
     <PackageReference Include="CompareNETObjects" Version="4.61.0" />
-    <PackageReference Include="JsonSubTypes" Version="1.7.0" />
+    <PackageReference Include="JsonSubTypes" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="Polly" Version="7.2.0" />
-    <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
+    <PackageReference Include="Polly" Version="7.2.1" />
+    <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/README.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/README.md
index cd422fe287d..8d4de67b2fb 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/README.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/README.md
@@ -14,11 +14,11 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a name="dependencies"></a>
 ## Dependencies
 
-- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.4 or later
+- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.7 or later
 - [Json.NET](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
-- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.8.0 or later
 - [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later
-- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 5.0.0 or later
 
 The DLLs included in the package may not be the latest version. We recommend using [NuGet](https://docs.nuget.org/consume/installing-nuget) to obtain the latest version of the packages:
 ```
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 16c0999a82b..48cb75d22f9 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -21,11 +21,11 @@
 
   <ItemGroup>
     <PackageReference Include="CompareNETObjects" Version="4.61.0" />
-    <PackageReference Include="JsonSubTypes" Version="1.7.0" />
+    <PackageReference Include="JsonSubTypes" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="RestSharp" Version="106.11.4" />
-    <PackageReference Include="Polly" Version="7.2.0" />
-    <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
+    <PackageReference Include="RestSharp" Version="106.11.7" />
+    <PackageReference Include="Polly" Version="7.2.1" />
+    <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/README.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/README.md
index cd422fe287d..8d4de67b2fb 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/README.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/README.md
@@ -14,11 +14,11 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a name="dependencies"></a>
 ## Dependencies
 
-- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.4 or later
+- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.7 or later
 - [Json.NET](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
-- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.8.0 or later
 - [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later
-- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 5.0.0 or later
 
 The DLLs included in the package may not be the latest version. We recommend using [NuGet](https://docs.nuget.org/consume/installing-nuget) to obtain the latest version of the packages:
 ```
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 2afcc21e123..67233ee9af1 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -21,11 +21,11 @@
 
   <ItemGroup>
     <PackageReference Include="CompareNETObjects" Version="4.61.0" />
-    <PackageReference Include="JsonSubTypes" Version="1.7.0" />
+    <PackageReference Include="JsonSubTypes" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="RestSharp" Version="106.11.4" />
-    <PackageReference Include="Polly" Version="7.2.0" />
-    <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
+    <PackageReference Include="RestSharp" Version="106.11.7" />
+    <PackageReference Include="Polly" Version="7.2.1" />
+    <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/README.md b/samples/client/petstore/csharp-netcore/OpenAPIClient/README.md
index 1cca61e2871..cec8c29dbba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/README.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/README.md
@@ -17,11 +17,11 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a name="dependencies"></a>
 ## Dependencies
 
-- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.4 or later
+- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.7 or later
 - [Json.NET](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
-- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.8.0 or later
 - [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later
-- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 5.0.0 or later
 
 The DLLs included in the package may not be the latest version. We recommend using [NuGet](https://docs.nuget.org/consume/installing-nuget) to obtain the latest version of the packages:
 ```
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 565cada04ef..46d46e09809 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -21,11 +21,11 @@
 
   <ItemGroup>
     <PackageReference Include="CompareNETObjects" Version="4.61.0" />
-    <PackageReference Include="JsonSubTypes" Version="1.7.0" />
+    <PackageReference Include="JsonSubTypes" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="RestSharp" Version="106.11.4" />
-    <PackageReference Include="Polly" Version="7.2.0" />
-    <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
+    <PackageReference Include="RestSharp" Version="106.11.7" />
+    <PackageReference Include="Polly" Version="7.2.1" />
+    <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/README.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/README.md
index cd422fe287d..8d4de67b2fb 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/README.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/README.md
@@ -14,11 +14,11 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a name="dependencies"></a>
 ## Dependencies
 
-- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.4 or later
+- [RestSharp](https://www.nuget.org/packages/RestSharp) - 106.11.7 or later
 - [Json.NET](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
-- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.8.0 or later
 - [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later
-- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 5.0.0 or later
 
 The DLLs included in the package may not be the latest version. We recommend using [NuGet](https://docs.nuget.org/consume/installing-nuget) to obtain the latest version of the packages:
 ```
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 1c6de6f87e9..e4650d91357 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -21,11 +21,11 @@
 
   <ItemGroup>
     <PackageReference Include="CompareNETObjects" Version="4.61.0" />
-    <PackageReference Include="JsonSubTypes" Version="1.7.0" />
+    <PackageReference Include="JsonSubTypes" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="RestSharp" Version="106.11.4" />
-    <PackageReference Include="Polly" Version="7.2.0" />
-    <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
+    <PackageReference Include="RestSharp" Version="106.11.7" />
+    <PackageReference Include="Polly" Version="7.2.1" />
+    <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
 </Project>