diff --git a/src/Core/Requests/RequestDataConverter.cs b/src/Core/Requests/RequestDataConverter.cs
index 90ab7d5..e577762 100644
--- a/src/Core/Requests/RequestDataConverter.cs
+++ b/src/Core/Requests/RequestDataConverter.cs
@@ -290,7 +290,7 @@ internal object ConvertSingleEntity(ExpandoObject dynamicObject, object dto)
                     dynamicProp.Key, dynamicValue);
 
                 // skip any nullable properties with a empty value
-                if (Nullable.GetUnderlyingType(targetProp.PropertyType) != null && string.IsNullOrEmpty(dynamicValue.ToString()))
+                if (targetProp != null && Nullable.GetUnderlyingType(targetProp.PropertyType) != null && string.IsNullOrEmpty(dynamicValue.ToString()))
                     continue;
 
                 targetProp?.SetValue(dto, dynamicValue.GetType() == targetProp.PropertyType 
diff --git a/src/hubspot-client.csproj b/src/hubspot-client.csproj
index 74f24ac..9e6ea3a 100644
--- a/src/hubspot-client.csproj
+++ b/src/hubspot-client.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net461</TargetFrameworks>
-    <Version>0.19.1</Version>
+    <Version>0.19.2</Version>
     <AssemblyName>Skarp.HubSpotClient</AssemblyName>
     <RootNamespace>Skarp.HubSpotClient</RootNamespace>
     <Title>HubSpotClient</Title>