diff --git a/docs/generators/aspnetcore.md b/docs/generators/aspnetcore.md
index 814ed0d4bd2f..93d544bb4576 100644
--- a/docs/generators/aspnetcore.md
+++ b/docs/generators/aspnetcore.md
@@ -116,6 +116,9 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <ul class="column-ul">
 <li>Client</li>
 <li>Configuration</li>
+<li>Environment</li>
+<li>OperatingSystem</li>
+<li>TimeZone</li>
 <li>Version</li>
 <li>abstract</li>
 <li>as</li>
diff --git a/docs/generators/csharp-functions.md b/docs/generators/csharp-functions.md
index 8faf39035852..b404eed8cb3c 100644
--- a/docs/generators/csharp-functions.md
+++ b/docs/generators/csharp-functions.md
@@ -109,6 +109,9 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <ul class="column-ul">
 <li>Client</li>
 <li>Configuration</li>
+<li>Environment</li>
+<li>OperatingSystem</li>
+<li>TimeZone</li>
 <li>Version</li>
 <li>abstract</li>
 <li>as</li>
diff --git a/docs/generators/csharp.md b/docs/generators/csharp.md
index 54ee3942c724..09d2bc30c489 100644
--- a/docs/generators/csharp.md
+++ b/docs/generators/csharp.md
@@ -115,6 +115,9 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <ul class="column-ul">
 <li>Client</li>
 <li>Configuration</li>
+<li>Environment</li>
+<li>OperatingSystem</li>
+<li>TimeZone</li>
 <li>Version</li>
 <li>abstract</li>
 <li>as</li>
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java
index 871dd608322b..b458f6aeba60 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java
@@ -136,7 +136,8 @@ public AbstractCSharpCodegen() {
                         // set "client" as a reserved word to avoid conflicts with Org.OpenAPITools.Client
                         // this is a workaround and can be removed if c# api client is updated to use
                         // fully qualified name
-                        "Client", "client", "parameter", "Configuration", "Version",
+                        "Client", "client", "parameter", "Configuration", "Version", "Environment",
+                        "TimeZone", "OperatingSystem",
                         // local variable names in API methods (endpoints)
                         "localVarPath", "localVarPathParams", "localVarQueryParams", "localVarHeaderParams",
                         "localVarFormParams", "localVarFileParams", "localVarStatusCode", "localVarResponse",
diff --git a/modules/openapi-generator/src/main/resources/csharp/netcore_project.mustache b/modules/openapi-generator/src/main/resources/csharp/netcore_project.mustache
index eeabe98a3963..8e10231c87eb 100644
--- a/modules/openapi-generator/src/main/resources/csharp/netcore_project.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp/netcore_project.mustache
@@ -43,7 +43,7 @@
       {{/useGenericHost}}
       {{^useGenericHost}}
       {{#supportsRetry}}
-    <PackageReference Include="Polly" Version="{{^netStandard}}7.2.3{{/netStandard}}{{#netStandard}}7.2.3{{/netStandard}}" />
+    <PackageReference Include="Polly" Version="{{^netStandard}}8.1.0{{/netStandard}}{{#netStandard}}8.1.0{{/netStandard}}" />
       {{/supportsRetry}}
       {{/useGenericHost}}
     {{#validatable}}
diff --git a/modules/openapi-generator/src/main/resources/csharp/netcore_testproject.mustache b/modules/openapi-generator/src/main/resources/csharp/netcore_testproject.mustache
index c55be486465b..a5dfece921fe 100644
--- a/modules/openapi-generator/src/main/resources/csharp/netcore_testproject.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp/netcore_testproject.mustache
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="{{^netStandard}}17.7.2{{/netStandard}}{{#netStandard}}15.9.2{{/netStandard}}" />
-    <PackageReference Include="xunit" Version="{{^netStandard}}2.5.1{{/netStandard}}{{#netStandard}}2.4.2{{/netStandard}}" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="{{^netStandard}}2.5.1{{/netStandard}}{{#netStandard}}2.4.5{{/netStandard}}" />
+    <PackageReference Include="xunit" Version="{{^netStandard}}2.6.1{{/netStandard}}{{#netStandard}}2.4.2{{/netStandard}}" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="{{^netStandard}}2.5.3{{/netStandard}}{{#netStandard}}2.4.5{{/netStandard}}" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/modules/openapi-generator/src/main/resources/csharp/nuspec.mustache b/modules/openapi-generator/src/main/resources/csharp/nuspec.mustache
index 356b9079d076..18fe4aacc874 100644
--- a/modules/openapi-generator/src/main/resources/csharp/nuspec.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp/nuspec.mustache
@@ -42,7 +42,7 @@
             <dependency id="System.ComponentModel.Annotations" version="5.0.0" />
             {{/validatable}}
             {{#supportsRetry}}
-            <dependency id="Polly" version="7.2.3" />
+            <dependency id="Polly" version="8.1.0" />
             {{/supportsRetry}}
 
         </dependencies>
diff --git a/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index 254c08a55838..66408e8d3281 100644
--- a/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 89948381e2ee..addc6411ef6b 100644
--- a/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 8662fc819fc7..6064f45f6dd4 100644
--- a/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
diff --git a/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index 254c08a55838..66408e8d3281 100644
--- a/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Model/Env.cs b/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Model/Env.cs
index f540de64f58f..4d30dcc37ec3 100644
--- a/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Model/Env.cs
+++ b/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Model/Env.cs
@@ -28,7 +28,7 @@ namespace Org.OpenAPITools.Model
     /// <summary>
     /// Env
     /// </summary>
-    [DataContract(Name = "Environment")]
+    [DataContract(Name = "varEnvironment")]
     public partial class Env : IEquatable<Env>, IValidatableObject
     {
         /// <summary>
diff --git a/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 89948381e2ee..addc6411ef6b 100644
--- a/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-restsharp-name-parameter-mappings/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 8662fc819fc7..6064f45f6dd4 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
diff --git a/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt-useSourceGeneration/src/UseSourceGeneration.Test/UseSourceGeneration.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt-useSourceGeneration/src/UseSourceGeneration.Test/UseSourceGeneration.Test.csproj
index 517dacd06ac6..4711912c0ea2 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt-useSourceGeneration/src/UseSourceGeneration.Test/UseSourceGeneration.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt-useSourceGeneration/src/UseSourceGeneration.Test/UseSourceGeneration.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index c67430ffde40..87c2b274318b 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0-nrt/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index e93687711f15..086c8a39d348 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-generichost-net6.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -9,8 +9,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-allOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-allOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index c67430ffde40..87c2b274318b 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-allOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-allOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-anyOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-anyOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index c67430ffde40..87c2b274318b 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-anyOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-anyOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-oneOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-oneOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index c67430ffde40..87c2b274318b 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-oneOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-generichost-netcore-latest-oneOf/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 5ea66219d6ad..32a0e7090ce3 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -23,7 +23,7 @@
     <PackageReference Include="CompareNETObjects" Version="4.82.0" />
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
diff --git a/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index 31e3ea504be7..4894e3983d79 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -9,8 +9,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index d4d61398d362..673473e74a28 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
diff --git a/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index 2b6c522b3b61..6e1e97fd27d1 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -9,8 +9,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index babfa76b552e..84e6c8e86ea6 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-net48/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
diff --git a/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index 7f2cb9257b59..fd52336309ad 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,8 +10,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 21a470d6f6a5..154b17942c57 100644
--- a/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -25,7 +25,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 8662fc819fc7..6064f45f6dd4 100644
--- a/samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
 
diff --git a/samples/client/petstore/csharp/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 21a470d6f6a5..154b17942c57 100644
--- a/samples/client/petstore/csharp/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -25,7 +25,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/samples/client/petstore/csharp/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 9e32dbb6e794..2acb240dfdee 100644
--- a/samples/client/petstore/csharp/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="110.2.0" />
-    <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>