diff --git a/src/WebJobs.Extensions.DurableTask/HttpManagementPayload.cs b/src/WebJobs.Extensions.DurableTask/HttpManagementPayload.cs
index 1cc7cecc2..db91fdb0b 100644
--- a/src/WebJobs.Extensions.DurableTask/HttpManagementPayload.cs
+++ b/src/WebJobs.Extensions.DurableTask/HttpManagementPayload.cs
@@ -3,7 +3,6 @@
 
 using Newtonsoft.Json;
 
-#nullable enable
 namespace Microsoft.Azure.WebJobs.Extensions.DurableTask
 {
     /// <summary>
@@ -18,7 +17,7 @@ public class HttpManagementPayload
         /// The ID of the orchestration instance.
         /// </value>
         [JsonProperty("id")]
-        public string? Id { get; internal set; }
+        public string Id { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP GET status query endpoint URL.
@@ -27,7 +26,7 @@ public class HttpManagementPayload
         /// The HTTP URL for fetching the instance status.
         /// </value>
         [JsonProperty("statusQueryGetUri")]
-        public string? StatusQueryGetUri { get; internal set; }
+        public string StatusQueryGetUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP POST external event sending endpoint URL.
@@ -36,7 +35,7 @@ public class HttpManagementPayload
         /// The HTTP URL for posting external event notifications.
         /// </value>
         [JsonProperty("sendEventPostUri")]
-        public string? SendEventPostUri { get; internal set; }
+        public string SendEventPostUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP POST instance termination endpoint.
@@ -45,7 +44,7 @@ public class HttpManagementPayload
         /// The HTTP URL for posting instance termination commands.
         /// </value>
         [JsonProperty("terminatePostUri")]
-        public string? TerminatePostUri { get; internal set; }
+        public string TerminatePostUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP POST instance rewind endpoint.
@@ -54,7 +53,7 @@ public class HttpManagementPayload
         /// The HTTP URL for rewinding orchestration instances.
         /// </value>
         [JsonProperty("rewindPostUri")]
-        public string? RewindPostUri { get; internal set; }
+        public string RewindPostUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP DELETE purge instance history by instance ID endpoint.
@@ -63,7 +62,7 @@ public class HttpManagementPayload
         /// The HTTP URL for purging instance history by instance ID.
         /// </value>
         [JsonProperty("purgeHistoryDeleteUri")]
-        public string? PurgeHistoryDeleteUri { get; internal set; }
+        public string PurgeHistoryDeleteUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP POST instance restart endpoint.
@@ -72,7 +71,7 @@ public class HttpManagementPayload
         /// The HTTP URL for restarting an orchestration instance.
         /// </value>
         [JsonProperty("restartPostUri")]
-        public string? RestartPostUri { get; internal set; }
+        public string RestartPostUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP POST instance suspend endpoint.
@@ -81,7 +80,7 @@ public class HttpManagementPayload
         /// The HTTP URL for suspending an orchestration instance.
         /// </value>
         [JsonProperty("suspendPostUri")]
-        public string? SuspendPostUri { get; internal set; }
+        public string SuspendPostUri { get; internal set; }
 
         /// <summary>
         /// Gets the HTTP POST instance resume endpoint.
@@ -90,6 +89,6 @@ public class HttpManagementPayload
         /// The HTTP URL for resuming an orchestration instance.
         /// </value>
         [JsonProperty("resumePostUri")]
-        public string? ResumePostUri { get; internal set; }
+        public string ResumePostUri { get; internal set; }
     }
 }
diff --git a/src/Worker.Extensions.DurableTask/HttpManagementPayload.cs b/src/Worker.Extensions.DurableTask/HttpManagementPayload.cs
index 62f2301d3..df2afe92c 100644
--- a/src/Worker.Extensions.DurableTask/HttpManagementPayload.cs
+++ b/src/Worker.Extensions.DurableTask/HttpManagementPayload.cs
@@ -20,7 +20,7 @@ public class HttpManagementPayload
     /// The ID of the orchestration instance.
     /// </value>
     [JsonProperty("id")]
-    public string Id { get; internal set; }
+    public string? Id { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP GET status query endpoint URL.
@@ -29,7 +29,7 @@ public class HttpManagementPayload
     /// The HTTP URL for fetching the instance status.
     /// </value>
     [JsonProperty("statusQueryGetUri")]
-    public string StatusQueryGetUri { get; internal set; }
+    public string? StatusQueryGetUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP POST external event sending endpoint URL.
@@ -38,7 +38,7 @@ public class HttpManagementPayload
     /// The HTTP URL for posting external event notifications.
     /// </value>
     [JsonProperty("sendEventPostUri")]
-    public string SendEventPostUri { get; internal set; }
+    public string? SendEventPostUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP POST instance termination endpoint.
@@ -47,7 +47,7 @@ public class HttpManagementPayload
     /// The HTTP URL for posting instance termination commands.
     /// </value>
     [JsonProperty("terminatePostUri")]
-    public string TerminatePostUri { get; internal set; }
+    public string? TerminatePostUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP POST instance rewind endpoint.
@@ -56,7 +56,7 @@ public class HttpManagementPayload
     /// The HTTP URL for rewinding orchestration instances.
     /// </value>
     [JsonProperty("rewindPostUri")]
-    public string RewindPostUri { get; internal set; }
+    public string? RewindPostUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP DELETE purge instance history by instance ID endpoint.
@@ -65,7 +65,7 @@ public class HttpManagementPayload
     /// The HTTP URL for purging instance history by instance ID.
     /// </value>
     [JsonProperty("purgeHistoryDeleteUri")]
-    public string PurgeHistoryDeleteUri { get; internal set; }
+    public string? PurgeHistoryDeleteUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP POST instance restart endpoint.
@@ -74,7 +74,7 @@ public class HttpManagementPayload
     /// The HTTP URL for restarting an orchestration instance.
     /// </value>
     [JsonProperty("restartPostUri")]
-    public string RestartPostUri { get; internal set; }
+    public string? RestartPostUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP POST instance suspend endpoint.
@@ -83,7 +83,7 @@ public class HttpManagementPayload
     /// The HTTP URL for suspending an orchestration instance.
     /// </value>
     [JsonProperty("suspendPostUri")]
-    public string SuspendPostUri { get; internal set; }
+    public string? SuspendPostUri { get; internal set; }
 
     /// <summary>
     /// Gets the HTTP POST instance resume endpoint.
@@ -92,5 +92,5 @@ public class HttpManagementPayload
     /// The HTTP URL for resuming an orchestration instance.
     /// </value>
     [JsonProperty("resumePostUri")]
-    public string ResumePostUri { get; internal set; }
+    public string? ResumePostUri { get; internal set; }
 }