diff --git a/.gitignore b/.gitignore
index ae457b1..7a671c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -136,7 +136,7 @@ publish/
 *.nupkg
 !**/packages/build/
 packages/
-#.nuget/NuGet.exe
+.nuget/
 
 # Windows Azure Build Output
 csx
diff --git a/src/CompaniesHouse/Response/Officers/Officer.cs b/src/CompaniesHouse/Response/Officers/Officer.cs
index 7741a96..7636053 100644
--- a/src/CompaniesHouse/Response/Officers/Officer.cs
+++ b/src/CompaniesHouse/Response/Officers/Officer.cs
@@ -43,5 +43,8 @@ public class Officer
 
         [JsonProperty(PropertyName = "links")]
         public OfficerLinks Links { get; set; }
+
+        [JsonProperty(PropertyName = "person_number")]
+        public string PersonNumber { get; set; }
     }
 }
\ No newline at end of file
diff --git a/tests/CompaniesHouse.Tests/ResourceBuilders/Officer.cs b/tests/CompaniesHouse.Tests/ResourceBuilders/Officer.cs
index 89ecf48..509b314 100644
--- a/tests/CompaniesHouse.Tests/ResourceBuilders/Officer.cs
+++ b/tests/CompaniesHouse.Tests/ResourceBuilders/Officer.cs
@@ -29,5 +29,7 @@ public class Officer
         public OfficerIdentification Identification { get; set; }
 
         public OfficerLinks Links { get; set; }
+
+        public string PersonNumber { get; set; }
     }
 }
\ No newline at end of file
diff --git a/tests/CompaniesHouse.Tests/ResourceBuilders/OfficersResourceBuilder.cs b/tests/CompaniesHouse.Tests/ResourceBuilders/OfficersResourceBuilder.cs
index 1f8ca67..22532dd 100644
--- a/tests/CompaniesHouse.Tests/ResourceBuilders/OfficersResourceBuilder.cs
+++ b/tests/CompaniesHouse.Tests/ResourceBuilders/OfficersResourceBuilder.cs
@@ -66,7 +66,8 @@ public static string CreateSingle(Officer officer)
                         ""legal_form"": ""{officer.Identification.LegalForm}"",
                         ""place_registered"": ""{officer.Identification.PlaceRegistered}"",
                         ""registration_number"": ""{officer.Identification.RegistrationNumber}""
-                    }}
+                    }},
+                    ""person_number"" : ""{officer.PersonNumber}""
                  }}";
         }