diff --git a/CHANGELOG.md b/CHANGELOG.md
index cdb5645..345ba25 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,8 +33,10 @@ classes you are retaining.
   a `v1` server after adding this package to their Laravel application.
 
 ### Removed
-- **BREAKING** The `Arr` field has been removed - use the new `ArrayList` or `ArrayHash`
+- **BREAKING** The `Arr` schema field has been removed - use the new `ArrayList` or `ArrayHash`
 fields instead.
+- **BREAKING** The `uri` method on relationship routes has been removed. Relationship URIs
+are now set on the schema field for the relationship (via the `withUriFieldName` method).
 
 ## [1.0.0-alpha.1] - 2021-01-25
 
diff --git a/src/Routing/PendingRelationshipRegistration.php b/src/Routing/PendingRelationshipRegistration.php
index 213276b..5699137 100644
--- a/src/Routing/PendingRelationshipRegistration.php
+++ b/src/Routing/PendingRelationshipRegistration.php
@@ -82,19 +82,6 @@ public function __construct(
         $this->options = [];
     }
 
-    /**
-     * Set the URI for the relationship, if it is not the same as the field name.
-     *
-     * @param string $uri
-     * @return $this
-     */
-    public function uri(string $uri): self
-    {
-        $this->options['relationship_uri'] = $uri;
-
-        return $this;
-    }
-
     /**
      * Set the methods the controller should apply to.
      *
diff --git a/src/Routing/RelationshipRegistrar.php b/src/Routing/RelationshipRegistrar.php
index e5dc007..360def0 100644
--- a/src/Routing/RelationshipRegistrar.php
+++ b/src/Routing/RelationshipRegistrar.php
@@ -22,6 +22,7 @@
 use Illuminate\Contracts\Routing\Registrar as RegistrarContract;
 use Illuminate\Routing\Route as IlluminateRoute;
 use Illuminate\Routing\RouteCollection;
+use LaravelJsonApi\Contracts\Schema\Schema;
 use LaravelJsonApi\Core\Support\Str;
 
 class RelationshipRegistrar
@@ -32,6 +33,11 @@ class RelationshipRegistrar
      */
     private RegistrarContract $router;
 
+    /**
+     * @var Schema
+     */
+    private Schema $schema;
+
     /**
      * @var string
      */
@@ -51,17 +57,20 @@ class RelationshipRegistrar
      * RelationshipRegistrar constructor.
      *
      * @param RegistrarContract $router
+     * @param Schema $schema
      * @param string $resourceType
      * @param string $controller
      * @param string $parameter
      */
     public function __construct(
         RegistrarContract $router,
+        Schema $schema,
         string $resourceType,
         string $controller,
         string $parameter
     ) {
         $this->router = $router;
+        $this->schema = $schema;
         $this->resourceType = $resourceType;
         $this->controller = $controller;
         $this->parameter = $parameter;
@@ -95,7 +104,7 @@ public function register(string $fieldName, bool $hasMany, array $options = []):
      */
     protected function addShowRelated(string $fieldName, array $options): IlluminateRoute
     {
-        $uri = $this->getRelationshipUri($fieldName, $options);
+        $uri = $this->getRelationshipUri($fieldName);
         $action = $this->getRelationshipAction(
             'showRelated',
             'showRelated' . Str::classify($fieldName),
@@ -120,7 +129,7 @@ protected function addShowRelated(string $fieldName, array $options): Illuminate
      */
     protected function addShowRelationship(string $fieldName, array $options): IlluminateRoute
     {
-        $uri = $this->getRelationshipUri($fieldName, $options);
+        $uri = $this->getRelationshipUri($fieldName);
         $action = $this->getRelationshipAction(
             'showRelationship',
             'show' . Str::classify($fieldName),
@@ -145,7 +154,7 @@ protected function addShowRelationship(string $fieldName, array $options): Illum
      */
     protected function addUpdateRelationship(string $fieldName, array $options): IlluminateRoute
     {
-        $uri = $this->getRelationshipUri($fieldName, $options);
+        $uri = $this->getRelationshipUri($fieldName);
         $action = $this->getRelationshipAction(
             'updateRelationship',
             'update' . Str::classify($fieldName),
@@ -170,7 +179,7 @@ protected function addUpdateRelationship(string $fieldName, array $options): Ill
      */
     protected function addAttachRelationship(string $fieldName, array $options): IlluminateRoute
     {
-        $uri = $this->getRelationshipUri($fieldName, $options);
+        $uri = $this->getRelationshipUri($fieldName);
         $action = $this->getRelationshipAction(
             'attachRelationship',
             'attach' . Str::classify($fieldName),
@@ -195,7 +204,7 @@ protected function addAttachRelationship(string $fieldName, array $options): Ill
      */
     protected function addDetachRelationship(string $fieldName, array $options): IlluminateRoute
     {
-        $uri = $this->getRelationshipUri($fieldName, $options);
+        $uri = $this->getRelationshipUri($fieldName);
         $action = $this->getRelationshipAction(
             'detachRelationship',
             'detach' . Str::classify($fieldName),
@@ -277,16 +286,11 @@ private function getRelationshipAction(
 
     /**
      * @param string $fieldName
-     * @param array $options
      * @return string
      */
-    private function getRelationshipUri(string $fieldName, array $options): string
+    private function getRelationshipUri(string $fieldName): string
     {
-        if (isset($options['relationship_uri'])) {
-            return $options['relationship_uri'];
-        }
-
-        return Str::dasherize($fieldName);
+        return $this->schema->relationship($fieldName)->uriName();
     }
 
     /**
diff --git a/src/Routing/ResourceRegistrar.php b/src/Routing/ResourceRegistrar.php
index 48290f9..e0522af 100644
--- a/src/Routing/ResourceRegistrar.php
+++ b/src/Routing/ResourceRegistrar.php
@@ -88,9 +88,10 @@ public function relationships(
 
         $registrar = new RelationshipRegistrar(
             $this->router,
+            $this->server->schemas()->schemaFor($resourceType),
             $resourceType,
             $controller,
-            $parameter
+            $parameter,
         );
 
         $routes = new RouteCollection();
diff --git a/tests/lib/Integration/Routing/HasManyTest.php b/tests/lib/Integration/Routing/HasManyTest.php
index cb71882..5bc2d9b 100644
--- a/tests/lib/Integration/Routing/HasManyTest.php
+++ b/tests/lib/Integration/Routing/HasManyTest.php
@@ -74,7 +74,8 @@ public function genericProvider(): array
     public function test(string $method, string $uri, string $action, string $name): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')->prefix('v1')->namespace('Api\\V1')->resources(function ($server) {
@@ -99,13 +100,13 @@ public function test(string $method, string $uri, string $action, string $name):
      * @param string $method
      * @param string $uri
      * @param string $action
-     * @param string $name
      * @dataProvider genericProvider
      */
-    public function testName(string $method, string $uri, string $action, string $name): void
+    public function testName(string $method, string $uri, string $action): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () use ($action) {
             JsonApiRoute::server('v1')
@@ -131,7 +132,8 @@ public function testName(string $method, string $uri, string $action, string $na
     public function testMiddleware(string $method, string $uri): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')
@@ -157,7 +159,8 @@ public function testMiddleware(string $method, string $uri): void
     public function testUri(string $method, string $uri): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'blog-tags', 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')
@@ -165,7 +168,7 @@ public function testUri(string $method, string $uri): void
                 ->namespace('Api\\V1')
                 ->resources(function ($server) {
                     $server->resource('posts')->relationships(function ($relations) {
-                        $relations->hasMany('blog-tags')->uri('tags');
+                        $relations->hasMany('blog-tags');
                     });
                 });
         });
@@ -234,7 +237,8 @@ public function onlyProvider(): array
     public function testOnly($only, array $matches): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () use ($only) {
             JsonApiRoute::server('v1')
@@ -312,7 +316,8 @@ public function exceptProvider()
     public function testExcept($except, array $matches): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () use ($except) {
             JsonApiRoute::server('v1')
@@ -331,7 +336,8 @@ public function testExcept($except, array $matches): void
     public function testReadOnly(): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')
@@ -403,7 +409,8 @@ public function ownActionProvider(): array
     public function testOwnAction(string $method, string $uri, string $action, string $expected): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () use ($action) {
             JsonApiRoute::server('v1')->prefix('v1')->namespace('Api\\V1')->resources(function ($server) use ($action) {
@@ -430,7 +437,8 @@ public function testOwnAction(string $method, string $uri, string $action, strin
     public function testOwnActions(string $method, string $uri, string $action, string $expected): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'tags');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')->prefix('v1')->namespace('Api\\V1')->resources(function ($server) {
diff --git a/tests/lib/Integration/Routing/HasOneTest.php b/tests/lib/Integration/Routing/HasOneTest.php
index 3a40054..3f233ee 100644
--- a/tests/lib/Integration/Routing/HasOneTest.php
+++ b/tests/lib/Integration/Routing/HasOneTest.php
@@ -62,7 +62,8 @@ public function genericProvider(): array
     public function test(string $method, string $uri, string $action, string $name): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')->prefix('v1')->namespace('Api\\V1')->resources(function ($server) {
@@ -87,13 +88,13 @@ public function test(string $method, string $uri, string $action, string $name):
      * @param string $method
      * @param string $uri
      * @param string $action
-     * @param string $name
      * @dataProvider genericProvider
      */
-    public function testName(string $method, string $uri, string $action, string $name): void
+    public function testName(string $method, string $uri, string $action): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () use ($action) {
             JsonApiRoute::server('v1')
@@ -121,7 +122,8 @@ public function testName(string $method, string $uri, string $action, string $na
     public function testMiddleware(string $method, string $uri, string $action, string $name): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')
@@ -149,7 +151,8 @@ public function testMiddleware(string $method, string $uri, string $action, stri
     public function testUri(string $method, string $uri, string $action, string $name): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'user', 'author');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')
@@ -157,7 +160,7 @@ public function testUri(string $method, string $uri, string $action, string $nam
                 ->namespace('Api\\V1')
                 ->resources(function ($server) {
                     $server->resource('posts')->relationships(function ($relations) {
-                        $relations->hasOne('user')->uri('author');
+                        $relations->hasOne('user');
                     });
                 });
         });
@@ -203,7 +206,8 @@ public function onlyProvider(): array
     public function testOnly($only, array $matches): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () use ($only) {
             JsonApiRoute::server('v1')
@@ -258,7 +262,8 @@ public function exceptProvider()
     public function testExcept($except, array $matches): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () use ($except) {
             JsonApiRoute::server('v1')
@@ -277,7 +282,8 @@ public function testExcept($except, array $matches): void
     public function testReadOnly(): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')
@@ -334,7 +340,8 @@ public function ownActionProvider(): array
     public function testOwnAction(string $method, string $uri, string $action, string $expected): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () use ($action) {
             JsonApiRoute::server('v1')->prefix('v1')->namespace('Api\\V1')->resources(function ($server) use ($action) {
@@ -361,7 +368,8 @@ public function testOwnAction(string $method, string $uri, string $action, strin
     public function testOwnActions(string $method, string $uri, string $action, string $expected): void
     {
         $server = $this->createServer('v1');
-        $this->createSchema($server, 'posts', '\d+');
+        $schema = $this->createSchema($server, 'posts', '\d+');
+        $this->createRelation($schema, 'author');
 
         $this->defaultApiRoutesWithNamespace(function () {
             JsonApiRoute::server('v1')->prefix('v1')->namespace('Api\\V1')->resources(function ($server) {
@@ -377,4 +385,5 @@ public function testOwnActions(string $method, string $uri, string $action, stri
         $this->assertSame('post', $route->parameter('resource_id_name'));
         $this->assertSame('author', $route->parameter('resource_relationship'));
     }
+
 }
diff --git a/tests/lib/Integration/Routing/TestCase.php b/tests/lib/Integration/Routing/TestCase.php
index f567c2a..290e8f7 100644
--- a/tests/lib/Integration/Routing/TestCase.php
+++ b/tests/lib/Integration/Routing/TestCase.php
@@ -24,6 +24,7 @@
 use Illuminate\Support\Facades\Route;
 use LaravelJsonApi\Contracts\Schema\Container;
 use LaravelJsonApi\Contracts\Schema\ID;
+use LaravelJsonApi\Contracts\Schema\Relation;
 use LaravelJsonApi\Contracts\Schema\Schema;
 use LaravelJsonApi\Contracts\Server\Repository;
 use LaravelJsonApi\Contracts\Server\Server;
@@ -83,6 +84,21 @@ protected function createSchema(Server $server, string $name, string $pattern =
         return $schema;
     }
 
+    /**
+     * @param MockObject $schema
+     * @param string $fieldName
+     * @param string|null $uriName
+     * @return void
+     */
+    protected function createRelation(MockObject $schema, string $fieldName, string $uriName = null): void
+    {
+        $relation = $this->createMock(Relation::class);
+        $relation->method('name')->willReturn($fieldName);
+        $relation->method('uriName')->willReturn($uriName ?: $fieldName);
+
+        $schema->method('relationship')->with($fieldName)->willReturn($relation);
+    }
+
     /**
      * @param string $method
      * @param string $url