diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe26bbb..37730e5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,12 +15,12 @@ on:
 
 
 jobs:
-  silverstripe_411_php74:
-    name: "Silverstripe 4.11 | PHP 7.4"
+  silverstripe_5_php81:
+    name: "Silverstripe 5.0 | PHP 8.1"
     runs-on: ubuntu-latest
     if: "!contains(github.event.head_commit.message, '[skip ci]') && !contains(github.event.head_commit.message, '[ci skip]')"
     env:
-      php_version: 7.4
+      php_version: 8.1
       php_extensions: ctype, dom, fileinfo, hash, intl, mbstring, session, simplexml, tokenizer, xml, pdo, mysqli, gd, zip
     services:
       mysql:
@@ -69,8 +69,8 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-ss411-php74-${{ hashFiles('**/composer.json') }}-${{ hashFiles('.github/workflows/ci.yml') }}
-          restore-keys: ${{ runner.os }}-composer-ss411-php74-
+          key: ${{ runner.os }}-composer-ss5-php81-${{ hashFiles('**/composer.json') }}-${{ hashFiles('.github/workflows/ci.yml') }}
+          restore-keys: ${{ runner.os }}-composer-ss5-php81-
 
       - name: Install Composer dependencies
         env:
@@ -78,8 +78,8 @@ jobs:
         run: |
           composer self-update --ansi || true
           if [[ $GITHUB_ACCESS_TOKEN ]]; then composer config --ansi -g github-oauth.github.com $GITHUB_ACCESS_TOKEN; fi
-          composer require silverstripe/admin 1.11.* --no-update
-          composer require silverstripe/versioned 1.11.*
+          composer require silverstripe/admin 2.0.* --no-update
+          composer require silverstripe/versioned 2.0.*
           composer install --verbose --no-interaction --no-progress --no-suggest --optimize-autoloader --ansi
 
       - name: Configure Environment
@@ -177,7 +177,7 @@ jobs:
     runs-on: ubuntu-latest
     if: "!contains(github.event.head_commit.message, '[skip ci]') && !contains(github.event.head_commit.message, '[ci skip]')"
     env:
-      php_version: 7.4
+      php_version: 8.0
       php_extensions: ctype, dom, fileinfo, hash, intl, mbstring, session, simplexml, tokenizer, xml, pdo, mysqli, gd, zip
 
     steps:
diff --git a/composer.json b/composer.json
index bb81046..1f1bd72 100644
--- a/composer.json
+++ b/composer.json
@@ -12,9 +12,8 @@
 		}
 	],
 	"require": {
-		"silverstripe/framework": "~4.11",
-		"silverstripe/versioned": "^1.0",
-        "silverstripe/vendor-plugin": "^1.0"
+		"silverstripe/framework": "~4.11 | ^5",
+		"silverstripe/versioned": "^1 | ^2"
 	},
     "require-dev": {
         "phpunit/phpunit": "^9.5",
diff --git a/src/Forms/GridFieldSortableRows.php b/src/Forms/GridFieldSortableRows.php
index 8fa6a40..df21d18 100644
--- a/src/Forms/GridFieldSortableRows.php
+++ b/src/Forms/GridFieldSortableRows.php
@@ -223,7 +223,7 @@ class GridFieldSortableRows extends AbstractGridFieldComponent implements GridFi
         $list = clone $dataList;
         $list = $list->alterDataQuery(function ($query, SS_List $tmplist) {
             /** @var \SilverStripe\ORM\DataQuery $query */
-            $query->limit([]);
+            $query->limit(null);
             return $query;
         });
 
diff --git a/tests/PHPUnit/Forms/AutoSortTest.php b/tests/PHPUnit/Forms/AutoSortTest.php
index af0e211..c199b67 100644
--- a/tests/PHPUnit/Forms/AutoSortTest.php
+++ b/tests/PHPUnit/Forms/AutoSortTest.php
@@ -111,7 +111,7 @@ class AutoSortTest extends SapphireTest
 
         //Publish all records
         foreach ($list as $item) {
-            $item->publish('Stage', 'Live');
+            $item->publishSingle();
         }
 
 
@@ -168,7 +168,7 @@ class AutoSortTest extends SapphireTest
 
         //Publish all records
         foreach ($list as $item) {
-            $item->publish('Stage', 'Live');
+            $item->publishSingle();
         }
 
 
diff --git a/tests/PHPUnit/Forms/OrderingTest.php b/tests/PHPUnit/Forms/OrderingTest.php
index 4d54002..f4da413 100644
--- a/tests/PHPUnit/Forms/OrderingTest.php
+++ b/tests/PHPUnit/Forms/OrderingTest.php
@@ -1,6 +1,7 @@
 <?php
 namespace UndefinedOffset\SortableGridField\Tests;
 
+use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\HTTPRequest;
 use SilverStripe\Dev\SapphireTest;
@@ -9,7 +10,8 @@ use SilverStripe\Forms\Form;
 use SilverStripe\Forms\GridField\GridField;
 use SilverStripe\Forms\GridField\GridFieldConfig;
 use SilverStripe\ORM\ValidationException;
-use SilverStripe\Security\Member;
+use SilverStripe\Security\IdentityStore;
+use SilverStripe\Security\Security;
 use SilverStripe\Versioned\Versioned;
 use UndefinedOffset\SortableGridField\Forms\GridFieldSortableRows;
 use UndefinedOffset\SortableGridField\Tests\Forms\AutoSortTest\DummyController;
@@ -48,8 +50,8 @@ class OrderingTest extends SapphireTest
 
     public function testSortActionWithoutCorrectPermission()
     {
-        if (Member::currentUser()) {
-            Member::currentUser()->logOut();
+        if (Security::getCurrentUser()) {
+            Injector::inst()->get(IdentityStore::class)->logOut(Controller::curr()->getRequest());
         }
 
         $this->expectException(ValidationException::class);
@@ -97,7 +99,7 @@ class OrderingTest extends SapphireTest
 
         //Publish all records
         foreach ($list as $item) {
-            $item->publish('Stage', 'Live');
+            $item->publishSingle();
         }
 
         $team1 = $this->objFromFixture(VTeam::class, 'team1');
diff --git a/tests/PHPUnit/Forms/PageSortingTest.php b/tests/PHPUnit/Forms/PageSortingTest.php
index fc44df1..25d4615 100644
--- a/tests/PHPUnit/Forms/PageSortingTest.php
+++ b/tests/PHPUnit/Forms/PageSortingTest.php
@@ -107,7 +107,7 @@ class PageSortingTest extends SapphireTest
 
         //Publish all records
         foreach ($list as $item) {
-            $item->publish('Stage', 'Live');
+            $item->publishSingle();
         }
 
 
@@ -154,7 +154,7 @@ class PageSortingTest extends SapphireTest
 
         //Publish all records
         foreach ($list as $item) {
-            $item->publish('Stage', 'Live');
+            $item->publishSingle();
         }