diff --git a/src/SDK/Document.cs b/src/SDK/Document.cs
index 29daabdd..705e8b0b 100644
--- a/src/SDK/Document.cs
+++ b/src/SDK/Document.cs
@@ -80,6 +80,11 @@ public External External
             set;
         }
 
+        public Nullable<Boolean> ExternalSigned {
+            get;
+            set;
+        }
+
         public List<Field> Fields
         {
             get
diff --git a/src/SDK/Internal/Conversion/DocumentConverter.cs b/src/SDK/Internal/Conversion/DocumentConverter.cs
index e063be70..36b11d57 100644
--- a/src/SDK/Internal/Conversion/DocumentConverter.cs
+++ b/src/SDK/Internal/Conversion/DocumentConverter.cs
@@ -70,6 +70,11 @@ internal Document ToSDKDocument()
                 document.Tagged = apiDocument.Tagged;
             }
 
+            if ( apiDocument.ExternalSigned != null )
+            {
+                document.ExternalSigned = apiDocument.ExternalSigned;
+            }
+
             return document;
         }
 
diff --git a/src/SDK/Internal/HttpMethods.cs b/src/SDK/Internal/HttpMethods.cs
index d333e337..9bd05ea8 100644
--- a/src/SDK/Internal/HttpMethods.cs
+++ b/src/SDK/Internal/HttpMethods.cs
@@ -11,7 +11,7 @@ namespace OneSpanSign.Sdk.Internal
 	/// </summary>
 	public class HttpMethods
 	{
-        private const string ESL_API_VERSION = "11.48";
+        private const string ESL_API_VERSION = "11.49";
         private const string ESL_API_USER_AGENT = ".Net SDK v" + ESL_API_VERSION;
         private const string ESL_API_VERSION_HEADER = "esl-api-version=" + ESL_API_VERSION;
 
diff --git a/src/SDK/Models/Document.cs b/src/SDK/Models/Document.cs
index c289011a..86978647 100644
--- a/src/SDK/Models/Document.cs
+++ b/src/SDK/Models/Document.cs
@@ -191,6 +191,12 @@ public string SignedHash {
         public string SignerVerificationToken {
             get; set;
         }
+
+        [JsonProperty("externalSigned")]
+        public Nullable<Boolean> ExternalSigned
+        {
+            get; set;
+        }
 	
 	}
 }
\ No newline at end of file
diff --git a/src/SDK/OneSpanSign.Sdk.csproj b/src/SDK/OneSpanSign.Sdk.csproj
index 8cf397fe..51b62a35 100644
--- a/src/SDK/OneSpanSign.Sdk.csproj
+++ b/src/SDK/OneSpanSign.Sdk.csproj
@@ -10,7 +10,7 @@
     <Authors>Simon Levy</Authors>
     <Company>OneSpan</Company>
     <Product>OneSpan Sign SDK</Product>
-    <Version>11.48</Version>
+    <Version>11.49</Version>
     <Copyright>OneSpan</Copyright>
     <Description>.NET SDK for OneSpan Sign</Description>
     <PackageProjectUrl>https://github.com/OneSpan/oss.sdk.net</PackageProjectUrl>
@@ -23,7 +23,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <!-- .NET Standard 2.0 references, compilation flags and build options -->