diff --git a/README.md b/README.md
index 4a80247..7e3e92b 100644
--- a/README.md
+++ b/README.md
@@ -15,9 +15,9 @@
 
 ## Requirements
 
-* silverstripe/recipe-cms: ^4@dev
-* dnadesign/silverstripe-elemental: ^4@dev
-* dnadesign/silverstripe-elemental-list: ^1.1@dev
+* silverstripe/recipe-cms: ^5@dev
+* dnadesign/silverstripe-elemental: ^5@dev
+* dnadesign/silverstripe-elemental-list: 2.0.0-beta1
 
 ## Installation
 
diff --git a/composer.json b/composer.json
index 1d44e1e..442745e 100644
--- a/composer.json
+++ b/composer.json
@@ -14,12 +14,12 @@
     "type": "silverstripe-vendormodule",
     "license": "BSD-3-Clause",
     "require": {
-        "dnadesign/silverstripe-elemental": "^4.0",
-        "dnadesign/silverstripe-elemental-list": "^1.1",
-        "silverstripe/vendor-plugin": "^1.0"
+        "dnadesign/silverstripe-elemental": "^5.0",
+        "dnadesign/silverstripe-elemental-list": "2.0.0-beta1",
+        "silverstripe/vendor-plugin": "^2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7",
+        "phpunit/phpunit": "^9.5",
         "squizlabs/php_codesniffer": "*"
     },
     "config": {
@@ -35,7 +35,7 @@
     "prefer-stable": true,
     "extra": {
         "branch-alias": {
-            "dev-master": "2.0.x-dev"
+            "dev-master": "3.0.x-dev"
         }
     }
 }
diff --git a/src/Element/ElementTabSet.php b/src/Element/ElementTabSet.php
index f3075e6..cb79719 100644
--- a/src/Element/ElementTabSet.php
+++ b/src/Element/ElementTabSet.php
@@ -58,7 +58,7 @@ public function getCMSFields()
     /**
      * @return DBHTMLText
      */
-    public function getSummary()
+    public function getSummary(): string
     {
         if ($this->Elements()) {
             $ct = $this->Elements()->Elements()->count();
@@ -87,7 +87,7 @@ protected function provideBlockSchema()
     /**
      * @return string
      */
-    public function getType()
+    public function getType(): string
     {
         return _t(__CLASS__ . '.BlockType', 'TabSet');
     }
diff --git a/src/Element/TabElement.php b/src/Element/TabElement.php
index bd8301c..720acaf 100644
--- a/src/Element/TabElement.php
+++ b/src/Element/TabElement.php
@@ -63,7 +63,7 @@ public function getCMSFields()
     /**
      * @return DBHTMLText
      */
-    public function getSummary()
+    public function getSummary(): string
     {
         if ($this->Elements()->Elements()) {
             $ct = $this->Elements()->Elements()->count();
@@ -92,7 +92,7 @@ protected function provideBlockSchema()
     /**
      * @return string
      */
-    public function getType()
+    public function getType(): string
     {
         return _t(__CLASS__ . '.BlockType', 'Tab');
     }