diff --git a/src/libs/Ultravox/Generated/Ultravox.AccountsClient.AccountsList.g.cs b/src/libs/Ultravox/Generated/Ultravox.AccountsClient.AccountsList.g.cs
index 6510bec..d73c64c 100644
--- a/src/libs/Ultravox/Generated/Ultravox.AccountsClient.AccountsList.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.AccountsClient.AccountsList.g.cs
@@ -101,7 +101,7 @@ partial void ProcessAccountsListResponseContent(
                     __response.EnsureSuccessStatusCode();
 
                     return
-                        global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.Account>), JsonSerializerContext) as global::System.Collections.Generic.IList<global::Ultravox.Account> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.Account>?)global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.Account>), JsonSerializerContext) ??
                         throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
                 }
                 catch (global::System.Exception __ex)
@@ -132,7 +132,7 @@ partial void ProcessAccountsListResponseContent(
                     ).ConfigureAwait(false);
 
                     return
-                        await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.Account>), JsonSerializerContext).ConfigureAwait(false) as global::System.Collections.Generic.IList<global::Ultravox.Account> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.Account>?)await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.Account>), JsonSerializerContext).ConfigureAwait(false) ??
                         throw new global::System.InvalidOperationException("Response deserialization failed.");
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.AgentsClient.AgentsUsageList.g.cs b/src/libs/Ultravox/Generated/Ultravox.AgentsClient.AgentsUsageList.g.cs
index e33e242..03043fb 100644
--- a/src/libs/Ultravox/Generated/Ultravox.AgentsClient.AgentsUsageList.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.AgentsClient.AgentsUsageList.g.cs
@@ -177,7 +177,7 @@ partial void ProcessAgentsUsageListResponseContent(
                     __response.EnsureSuccessStatusCode();
 
                     return
-                        global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.AgentUsage>), JsonSerializerContext) as global::System.Collections.Generic.IList<global::Ultravox.AgentUsage> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.AgentUsage>?)global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.AgentUsage>), JsonSerializerContext) ??
                         throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
                 }
                 catch (global::System.Exception __ex)
@@ -208,7 +208,7 @@ partial void ProcessAgentsUsageListResponseContent(
                     ).ConfigureAwait(false);
 
                     return
-                        await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.AgentUsage>), JsonSerializerContext).ConfigureAwait(false) as global::System.Collections.Generic.IList<global::Ultravox.AgentUsage> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.AgentUsage>?)await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.AgentUsage>), JsonSerializerContext).ConfigureAwait(false) ??
                         throw new global::System.InvalidOperationException("Response deserialization failed.");
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsStagesToolsList.g.cs b/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsStagesToolsList.g.cs
index 37f01c4..511b6ac 100644
--- a/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsStagesToolsList.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsStagesToolsList.g.cs
@@ -113,7 +113,7 @@ partial void ProcessCallsStagesToolsListResponseContent(
                     __response.EnsureSuccessStatusCode();
 
                     return
-                        global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext) as global::System.Collections.Generic.IList<global::Ultravox.CallTool> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.CallTool>?)global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext) ??
                         throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
                 }
                 catch (global::System.Exception __ex)
@@ -144,7 +144,7 @@ partial void ProcessCallsStagesToolsListResponseContent(
                     ).ConfigureAwait(false);
 
                     return
-                        await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext).ConfigureAwait(false) as global::System.Collections.Generic.IList<global::Ultravox.CallTool> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.CallTool>?)await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext).ConfigureAwait(false) ??
                         throw new global::System.InvalidOperationException("Response deserialization failed.");
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsToolsList.g.cs b/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsToolsList.g.cs
index b646bcc..7dd5efe 100644
--- a/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsToolsList.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.CallsClient.CallsToolsList.g.cs
@@ -107,7 +107,7 @@ partial void ProcessCallsToolsListResponseContent(
                     __response.EnsureSuccessStatusCode();
 
                     return
-                        global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext) as global::System.Collections.Generic.IList<global::Ultravox.CallTool> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.CallTool>?)global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext) ??
                         throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
                 }
                 catch (global::System.Exception __ex)
@@ -138,7 +138,7 @@ partial void ProcessCallsToolsListResponseContent(
                     ).ConfigureAwait(false);
 
                     return
-                        await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext).ConfigureAwait(false) as global::System.Collections.Generic.IList<global::Ultravox.CallTool> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.CallTool>?)await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.CallTool>), JsonSerializerContext).ConfigureAwait(false) ??
                         throw new global::System.InvalidOperationException("Response deserialization failed.");
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.CorporaClient.CorporaQuery.g.cs b/src/libs/Ultravox/Generated/Ultravox.CorporaClient.CorporaQuery.g.cs
index b587342..3b5c14b 100644
--- a/src/libs/Ultravox/Generated/Ultravox.CorporaClient.CorporaQuery.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.CorporaClient.CorporaQuery.g.cs
@@ -122,7 +122,7 @@ partial void ProcessCorporaQueryResponseContent(
                     __response.EnsureSuccessStatusCode();
 
                     return
-                        global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult>), JsonSerializerContext) as global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult>?)global::System.Text.Json.JsonSerializer.Deserialize(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult>), JsonSerializerContext) ??
                         throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
                 }
                 catch (global::System.Exception __ex)
@@ -153,7 +153,7 @@ partial void ProcessCorporaQueryResponseContent(
                     ).ConfigureAwait(false);
 
                     return
-                        await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult>), JsonSerializerContext).ConfigureAwait(false) as global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult> ??
+                        (global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult>?)await global::System.Text.Json.JsonSerializer.DeserializeAsync(__content, typeof(global::System.Collections.Generic.IList<global::Ultravox.UltravoxV1CorpusQueryResult>), JsonSerializerContext).ConfigureAwait(false) ??
                         throw new global::System.InvalidOperationException("Response deserialization failed.");
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.ToolsClient.ToolsTestCreate.g.cs b/src/libs/Ultravox/Generated/Ultravox.ToolsClient.ToolsTestCreate.g.cs
index c2d2a0f..08e84b7 100644
--- a/src/libs/Ultravox/Generated/Ultravox.ToolsClient.ToolsTestCreate.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.ToolsClient.ToolsTestCreate.g.cs
@@ -95,13 +95,13 @@ partial void ProcessToolsTestCreateResponseContent(
                     if (ReadResponseAsString)
                     {
                         __content_default = await __response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
-                        __value_default = global::System.Text.Json.JsonSerializer.Deserialize(__content_default, typeof(string), JsonSerializerContext) as string;
+                        __value_default = (string?)global::System.Text.Json.JsonSerializer.Deserialize(__content_default, typeof(string), JsonSerializerContext);
                     }
                     else
                     {
                         __content_default = await __response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
 
-                        __value_default = global::System.Text.Json.JsonSerializer.Deserialize(__content_default, typeof(string), JsonSerializerContext) as string;
+                        __value_default = (string?)global::System.Text.Json.JsonSerializer.Deserialize(__content_default, typeof(string), JsonSerializerContext);
                     }
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.VoicesClient.PreviewVoice.g.cs b/src/libs/Ultravox/Generated/Ultravox.VoicesClient.PreviewVoice.g.cs
index 0bd68db..3d1bc7e 100644
--- a/src/libs/Ultravox/Generated/Ultravox.VoicesClient.PreviewVoice.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.VoicesClient.PreviewVoice.g.cs
@@ -104,13 +104,13 @@ partial void ProcessPreviewVoiceResponseContent(
                     if (ReadResponseAsString)
                     {
                         __content_400 = await __response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
-                        __value_400 = global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext) as string;
+                        __value_400 = (string?)global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext);
                     }
                     else
                     {
                         __content_400 = await __response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
 
-                        __value_400 = global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext) as string;
+                        __value_400 = (string?)global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext);
                     }
                 }
                 catch (global::System.Exception __ex)
diff --git a/src/libs/Ultravox/Generated/Ultravox.VoicesClient.VoicesPreviewRetrieve.g.cs b/src/libs/Ultravox/Generated/Ultravox.VoicesClient.VoicesPreviewRetrieve.g.cs
index 4bd7a23..0dab19a 100644
--- a/src/libs/Ultravox/Generated/Ultravox.VoicesClient.VoicesPreviewRetrieve.g.cs
+++ b/src/libs/Ultravox/Generated/Ultravox.VoicesClient.VoicesPreviewRetrieve.g.cs
@@ -128,13 +128,13 @@ partial void ProcessVoicesPreviewRetrieveResponseContent(
                     if (ReadResponseAsString)
                     {
                         __content_400 = await __response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
-                        __value_400 = global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext) as string;
+                        __value_400 = (string?)global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext);
                     }
                     else
                     {
                         __content_400 = await __response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
 
-                        __value_400 = global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext) as string;
+                        __value_400 = (string?)global::System.Text.Json.JsonSerializer.Deserialize(__content_400, typeof(string), JsonSerializerContext);
                     }
                 }
                 catch (global::System.Exception __ex)