From 8037ddca4ff185345a2efd093c24dca5b5da2eae Mon Sep 17 00:00:00 2001
From: Justintime50 <39606064+Justintime50@users.noreply.github.com>
Date: Tue, 21 Apr 2026 09:27:14 -0600
Subject: [PATCH] fix: mapping of Zip and Country on RegisterAddress (closes
 #656)

---
 CHANGELOG.md                                             | 4 ++++
 EasyPost.nuspec                                          | 2 +-
 EasyPost/Parameters/FedExRegistration/RegisterAddress.cs | 4 ++--
 EasyPost/Properties/VersionInfo.cs                       | 6 +++---
 4 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ee98888..ed5f7130 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## v7.7.2 (2026-04-21)
+
+- Corrects mapping of `Zip` and `Country` params for `RegisterAddress` parameter set to `postal_code` and `country_code` on the request
+
 ## v7.7.1 (2026-04-03)
 
 - Fixes the type of the Shipment option `Machinable` from `string` to `bool` (closes #653)
diff --git a/EasyPost.nuspec b/EasyPost.nuspec
index 475ac54c..7fc02d2b 100644
--- a/EasyPost.nuspec
+++ b/EasyPost.nuspec
@@ -3,7 +3,7 @@
     <metadata>
         <id>EasyPost-Official</id>
         <title>EasyPost (Official)</title>
-        <version>7.7.1</version>
+        <version>7.7.2</version>
         <authors>EasyPost</authors>
         <owners>EasyPost</owners>
         <projectUrl>https://www.easypost.com</projectUrl>
diff --git a/EasyPost/Parameters/FedExRegistration/RegisterAddress.cs b/EasyPost/Parameters/FedExRegistration/RegisterAddress.cs
index 465a3cc4..c3ca7cd1 100644
--- a/EasyPost/Parameters/FedExRegistration/RegisterAddress.cs
+++ b/EasyPost/Parameters/FedExRegistration/RegisterAddress.cs
@@ -52,13 +52,13 @@ public class RegisterAddress : BaseParameters<Models.API.FedExAccountValidationR
         /// <summary>
         ///     ZIP code for the FedEx registration.
         /// </summary>
-        [TopLevelRequestParameter(Necessity.Optional, "address_validation", "zip")]
+        [TopLevelRequestParameter(Necessity.Optional, "address_validation", "postal_code")]
         public string? Zip { get; set; }
 
         /// <summary>
         ///     Country code for the FedEx registration.
         /// </summary>
-        [TopLevelRequestParameter(Necessity.Optional, "address_validation", "country")]
+        [TopLevelRequestParameter(Necessity.Optional, "address_validation", "country_code")]
         public string? Country { get; set; }
 
         /// <summary>
diff --git a/EasyPost/Properties/VersionInfo.cs b/EasyPost/Properties/VersionInfo.cs
index 10d18ca0..5f6386be 100644
--- a/EasyPost/Properties/VersionInfo.cs
+++ b/EasyPost/Properties/VersionInfo.cs
@@ -2,6 +2,6 @@
 
 // Version information for an assembly must follow semantic versioning
 // When releasing a release candidate, append a 4th digit being the number of the release candidate
-[assembly: AssemblyVersion("7.7.1")]
-[assembly: AssemblyFileVersion("7.7.1")]
-[assembly: AssemblyInformationalVersion("7.7.1")]
+[assembly: AssemblyVersion("7.7.2")]
+[assembly: AssemblyFileVersion("7.7.2")]
+[assembly: AssemblyInformationalVersion("7.7.2")]