diff --git a/OpenAI-DotNet/OpenAI-DotNet.csproj b/OpenAI-DotNet/OpenAI-DotNet.csproj
index 1b5e1624..83f76e14 100644
--- a/OpenAI-DotNet/OpenAI-DotNet.csproj
+++ b/OpenAI-DotNet/OpenAI-DotNet.csproj
@@ -29,8 +29,10 @@ More context [on Roger Pincombe's blog](https://rogerpincombe.com/openai-dotnet-
     <AssemblyOriginatorKeyFile>OpenAI-DotNet.pfx</AssemblyOriginatorKeyFile>
     <IncludeSymbols>true</IncludeSymbols>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <Version>8.8.6</Version>
+    <Version>8.8.7</Version>
     <PackageReleaseNotes>
+Version 8.8.7
+- Fix VAD serialization not properly setting disabled values
 Version 8.8.6
 - Fix Realtime.UpdateSessionRequests failing to update session due to extra client secret data
 Version 8.8.4
diff --git a/OpenAI-DotNet/Realtime/DisabledVAD.cs b/OpenAI-DotNet/Realtime/DisabledVAD.cs
index 506c6687..993bf52c 100644
--- a/OpenAI-DotNet/Realtime/DisabledVAD.cs
+++ b/OpenAI-DotNet/Realtime/DisabledVAD.cs
@@ -4,8 +4,8 @@ public sealed class DisabledVAD : IVoiceActivityDetectionSettings
     {
         public TurnDetectionType Type => TurnDetectionType.Disabled;
 
-        public bool CreateResponse => false;
+        public bool? CreateResponse => null;
 
-        public bool InterruptResponse => false;
+        public bool? InterruptResponse => null;
     }
 }
diff --git a/OpenAI-DotNet/Realtime/IVoiceActivityDetectionSettings.cs b/OpenAI-DotNet/Realtime/IVoiceActivityDetectionSettings.cs
index 072a5e00..9e8dd717 100644
--- a/OpenAI-DotNet/Realtime/IVoiceActivityDetectionSettings.cs
+++ b/OpenAI-DotNet/Realtime/IVoiceActivityDetectionSettings.cs
@@ -3,7 +3,7 @@
     public interface IVoiceActivityDetectionSettings
     {
         public TurnDetectionType Type { get; }
-        public bool CreateResponse { get; }
-        public bool InterruptResponse { get; }
+        public bool? CreateResponse { get; }
+        public bool? InterruptResponse { get; }
     }
 }
diff --git a/OpenAI-DotNet/Realtime/SemanticVAD.cs b/OpenAI-DotNet/Realtime/SemanticVAD.cs
index a8e3bfc2..10c51146 100644
--- a/OpenAI-DotNet/Realtime/SemanticVAD.cs
+++ b/OpenAI-DotNet/Realtime/SemanticVAD.cs
@@ -6,7 +6,10 @@ public sealed class SemanticVAD : IVoiceActivityDetectionSettings
     {
         public SemanticVAD() { }
 
-        public SemanticVAD(bool createResponse = true, bool interruptResponse = true, VAD_Eagerness eagerness = VAD_Eagerness.Auto)
+        public SemanticVAD(
+            bool? createResponse = true,
+            bool? interruptResponse = true,
+            VAD_Eagerness eagerness = VAD_Eagerness.Auto)
         {
             CreateResponse = createResponse;
             InterruptResponse = interruptResponse;
@@ -20,11 +23,13 @@ public SemanticVAD(bool createResponse = true, bool interruptResponse = true, VA
 
         [JsonInclude]
         [JsonPropertyName("create_response")]
-        public bool CreateResponse { get; private set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        public bool? CreateResponse { get; private set; }
 
         [JsonInclude]
         [JsonPropertyName("interrupt_response")]
-        public bool InterruptResponse { get; private set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        public bool? InterruptResponse { get; private set; }
 
         [JsonInclude]
         [JsonPropertyName("eagerness")]
diff --git a/OpenAI-DotNet/Realtime/ServerVAD.cs b/OpenAI-DotNet/Realtime/ServerVAD.cs
index 8a922c96..781743a1 100644
--- a/OpenAI-DotNet/Realtime/ServerVAD.cs
+++ b/OpenAI-DotNet/Realtime/ServerVAD.cs
@@ -7,8 +7,8 @@ public sealed class ServerVAD : IVoiceActivityDetectionSettings
         public ServerVAD() { }
 
         public ServerVAD(
-            bool createResponse = true,
-            bool interruptResponse = true,
+            bool? createResponse = true,
+            bool? interruptResponse = true,
             int? prefixPadding = null,
             int? silenceDuration = null,
             float? detectionThreshold = null)
@@ -27,11 +27,13 @@ public ServerVAD(
 
         [JsonInclude]
         [JsonPropertyName("create_response")]
-        public bool CreateResponse { get; private set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        public bool? CreateResponse { get; private set; }
 
         [JsonInclude]
         [JsonPropertyName("interrupt_response")]
-        public bool InterruptResponse { get; private set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        public bool? InterruptResponse { get; private set; }
 
         [JsonInclude]
         [JsonPropertyName("prefix_padding_ms")]
diff --git a/OpenAI-DotNet/Realtime/VoiceActivityDetectionSettings.cs b/OpenAI-DotNet/Realtime/VoiceActivityDetectionSettings.cs
index 1906e49d..71123265 100644
--- a/OpenAI-DotNet/Realtime/VoiceActivityDetectionSettings.cs
+++ b/OpenAI-DotNet/Realtime/VoiceActivityDetectionSettings.cs
@@ -15,7 +15,7 @@ public VoiceActivityDetectionSettings(
             float? detectionThreshold = null,
             int? prefixPadding = null,
             int? silenceDuration = null,
-            bool createResponse = true)
+            bool? createResponse = true)
         {
             switch (type)
             {
@@ -32,7 +32,7 @@ public VoiceActivityDetectionSettings(
                     DetectionThreshold = null;
                     PrefixPadding = null;
                     SilenceDuration = null;
-                    CreateResponse = false;
+                    CreateResponse = null;
                     break;
             }
         }
@@ -45,13 +45,13 @@ public VoiceActivityDetectionSettings(
 
         [JsonInclude]
         [JsonPropertyName("create_response")]
-        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
-        public bool CreateResponse { get; private set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        public bool? CreateResponse { get; private set; }
 
         [JsonInclude]
         [JsonPropertyName("interrupt_response")]
-        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
-        public bool InterruptResponse { get; private set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        public bool? InterruptResponse { get; private set; }
 
         [JsonInclude]
         [JsonPropertyName("threshold")]