diff --git a/CHANGELOG.md b/CHANGELOG.md
index ece19fa7a..706af0715 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ This project follows [Semantic Versioning](http://semver.org) guidelines.
 ### Fixed
 * Fixes server creation API endpoint not passing the provided `external_id` to the creation service.
 
+### Added
+* Adds ability to modify the external ID for a server through the API.
+
 ## v0.7.2 (Derelict Dermodactylus)
 ### Fixed
 * Fixes an exception thrown when trying to access the `/nests/:id/eggs/:id` API endpoint.
diff --git a/app/Http/Requests/Api/Application/Servers/UpdateServerDetailsRequest.php b/app/Http/Requests/Api/Application/Servers/UpdateServerDetailsRequest.php
index 4b75138b9..aa585bad6 100644
--- a/app/Http/Requests/Api/Application/Servers/UpdateServerDetailsRequest.php
+++ b/app/Http/Requests/Api/Application/Servers/UpdateServerDetailsRequest.php
@@ -13,9 +13,10 @@ class UpdateServerDetailsRequest extends ServerWriteRequest
      */
     public function rules(): array
     {
-        $rules = Server::getUpdateRulesForId($this->route()->parameter('server')->id);
+        $rules = Server::getUpdateRulesForId($this->getModel(Server::class)->id);
 
         return [
+            'external_id' => $rules['external_id'],
             'name' => $rules['name'],
             'user' => $rules['owner_id'],
             'description' => array_merge(['nullable'], $rules['description']),
@@ -31,6 +32,7 @@ class UpdateServerDetailsRequest extends ServerWriteRequest
     public function validated(): array
     {
         return [
+            'external_id' => $this->input('external_id'),
             'name' => $this->input('name'),
             'owner_id' => $this->input('user'),
             'description' => $this->input('description'),