diff --git a/Shippo/CustomsDeclaration.cs b/Shippo/CustomsDeclaration.cs
index a63c217..2c04ca2 100644
--- a/Shippo/CustomsDeclaration.cs
+++ b/Shippo/CustomsDeclaration.cs
@@ -22,6 +22,13 @@ public class InvoicedCharges : ShippoId
         public object OtherFees { get; set; }
     }
 
+    [JsonObject(MemberSerialization.OptIn)]
+    public class ExporterIdentification : ShippoId
+    {
+        [JsonProperty(PropertyName = "eori_number")]
+        public object EoriNumber { get; set; }
+    }
+
     [JsonObject(MemberSerialization.OptIn)]
     public class CustomsDeclaration : ShippoId {
         [JsonProperty(PropertyName = "object_created")]
@@ -98,6 +105,9 @@ public class CustomsDeclaration : ShippoId {
 
         [JsonProperty(PropertyName = "invoiced_charges")]
         public InvoicedCharges InvoicedCharges { get; set; }
+
+        [JsonProperty(PropertyName = "exporter_identification")]
+        public ExporterIdentification ExporterIdentification { get; set; }
     }
 }
 
diff --git a/Shippo/Shippo.csproj b/Shippo/Shippo.csproj
index 49e0885..066b34c 100644
--- a/Shippo/Shippo.csproj
+++ b/Shippo/Shippo.csproj
@@ -2,14 +2,14 @@
 
   <PropertyGroup>
     <TargetFrameworks>net45;net40</TargetFrameworks>
-    <Version>3.1.0</Version>
+    <Version>3.1.1</Version>
     <Title>Shippo client library</Title>
     <Description>.NET library which integrates with Shippo Multi Carrier Shipping API. This library provides access to Shippo (goshippo.com) API capabilities. Including label generation, rating, tracking and more.</Description>
     <Summary>Shippo Shipping API client Library (USPS, FedEx, UPS, and more)</Summary>
     <PackageProjectUrl>https://github.com/goshippo/shippo-csharp-client/</PackageProjectUrl>
     <RepositoryUrl>https://github.com/goshippo/shippo-csharp-client/</RepositoryUrl>
     <PackageTags>USPS Fedex UPS API Shippo</PackageTags>
-    <PackageReleaseNotes>Added Tracking Sub-statuses and additional Customs and Manifest testing</PackageReleaseNotes>
+    <PackageReleaseNotes>Adding EORI support</PackageReleaseNotes>
     <RepositoryType>Github</RepositoryType>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
   </PropertyGroup>
diff --git a/ShippoTesting/CustomsDeclarationTest.cs b/ShippoTesting/CustomsDeclarationTest.cs
index e552382..cb3466a 100644
--- a/ShippoTesting/CustomsDeclarationTest.cs
+++ b/ShippoTesting/CustomsDeclarationTest.cs
@@ -41,6 +41,9 @@ public void TestValidCreate()
             Assert.AreEqual(invoicedChargesParameters["total_duties"], testObject.InvoicedCharges.TotalDuties);
             Assert.AreEqual(invoicedChargesParameters["other_fees"], testObject.InvoicedCharges.OtherFees);
             Assert.AreEqual(invoicedChargesParameters["currency"], testObject.InvoicedCharges.Currency);
+
+            var exporterIdentificationParameters = (Dictionary<String, String>)parameters["exporter_identification"];
+            Assert.AreEqual(exporterIdentificationParameters["eori_number"], testObject.ExporterIdentification.EoriNumber);
         }
 
         [Test]
@@ -111,6 +114,11 @@ public static Hashtable getDefaultParameters()
             };
             parameters.Add("invoiced_charges", invoicedCharges);
 
+            var exporterIdentification = new Dictionary<String, String>(){
+                {"eori_number", "PL12345678912345"},
+            };
+            parameters.Add("exporter_identification", exporterIdentification);
+
             return parameters;
         }