diff --git a/tests/src/Functional/JsonApiFunctionalMultilingualTest.php b/tests/src/Functional/JsonApiFunctionalMultilingualTest.php
index 64dad31..a060d9a 100644
--- a/tests/src/Functional/JsonApiFunctionalMultilingualTest.php
+++ b/tests/src/Functional/JsonApiFunctionalMultilingualTest.php
@@ -49,8 +49,12 @@ class JsonApiFunctionalMultilingualTest extends JsonApiFunctionalTestBase {
   public function testReadMultilingual() {
     $this->createDefaultContent(5, 5, TRUE, TRUE, static::IS_MULTILINGUAL, FALSE);
 
+    // Different databases have different sort orders, so a sort is required so
+    // test expectations do not need to vary per database.
+    $default_sort = ['sort' => 'drupal_internal__nid'];
+
     // Test reading an individual entity.
-    $output = Json::decode($this->drupalGet('/ca/jsonapi/node/article/' . $this->nodes[0]->uuid(), ['query' => ['include' => 'field_tags,field_image']]));
+    $output = Json::decode($this->drupalGet('/ca/jsonapi/node/article/' . $this->nodes[0]->uuid(), ['query' => ['include' => 'field_tags,field_image'] + $default_sort]));
     $this->assertEquals($this->nodes[0]->getTranslation('ca')->getTitle(), $output['data']['attributes']['title']);
 
     $included_tags = array_filter($output['included'], function ($entry) {
@@ -61,11 +65,11 @@ class JsonApiFunctionalMultilingualTest extends JsonApiFunctionalTestBase {
     // TODO figure out how to fetcht the alt text of an image.
     $this->assertEquals($tag_name, reset($included_tags)['attributes']['name']);
 
-    $output = Json::decode($this->drupalGet('/ca/jsonapi/node/article/' . $this->nodes[0]->uuid()));
+    $output = Json::decode($this->drupalGet('/ca/jsonapi/node/article/' . $this->nodes[0]->uuid(), ['query' => $default_sort]));
     $this->assertEquals($this->nodes[0]->getTranslation('ca')->getTitle(), $output['data']['attributes']['title']);
 
     // Test reading a collection of entities.
-    $output = Json::decode($this->drupalGet('/ca/jsonapi/node/article'));
+    $output = Json::decode($this->drupalGet('/ca/jsonapi/node/article', ['query' => $default_sort]));
     $this->assertEquals($this->nodes[0]->getTranslation('ca')->getTitle(), $output['data'][0]['attributes']['title']);
   }
 
diff --git a/tests/src/Functional/UserTest.php b/tests/src/Functional/UserTest.php
index 131e38e..f6b3c12 100644
--- a/tests/src/Functional/UserTest.php
+++ b/tests/src/Functional/UserTest.php
@@ -419,7 +419,7 @@ class UserTest extends ResourceTestBase {
     // Grant permission to role that both users use.
     $this->grantPermissionsToTestedRole(['access user profiles']);
 
-    $collection_url = Url::fromRoute('jsonapi.user--user.collection');
+    $collection_url = Url::fromRoute('jsonapi.user--user.collection', [], ['query' => ['sort' => 'drupal_internal__uid']]);
     // @todo Remove line below in favor of commented line in https://www.drupal.org/project/jsonapi/issues/2878463.
     $user_a_url = Url::fromRoute(sprintf('jsonapi.user--user.individual'), ['entity' => $user_a->uuid()]);
     /* $user_a_url = $user_a->toUrl('jsonapi'); */
diff --git a/tests/src/Kernel/Controller/EntityResourceTest.php b/tests/src/Kernel/Controller/EntityResourceTest.php
index 2e0cd6d..2850813 100644
--- a/tests/src/Kernel/Controller/EntityResourceTest.php
+++ b/tests/src/Kernel/Controller/EntityResourceTest.php
@@ -329,15 +329,18 @@ class EntityResourceTest extends JsonapiKernelTestBase {
    */
   public function testGetPagedCollection() {
     $pager = new OffsetPage(1, 1);
+    $sort = new Sort([['path' => 'nid', 'direction' => 'ASC']]);
     $request = Request::create('/jsonapi/node/article');
     $request->attributes = new ParameterBag([
       '_route_params' => [
         '_json_api_params' => [
           'page' => $pager,
+          'sort' => $sort,
         ],
       ],
       '_json_api_params' => [
         'page' => $pager,
+        'sort' => $sort,
       ],
     ]);