diff --git a/tests/php/Controllers/LinkFieldControllerTest.php b/tests/php/Controllers/LinkFieldControllerTest.php
index 188b4746..65362c65 100644
--- a/tests/php/Controllers/LinkFieldControllerTest.php
+++ b/tests/php/Controllers/LinkFieldControllerTest.php
@@ -115,7 +115,7 @@ public function testLinkFormGetSchema(
         }
     }
 
-    public function provideLinkFormGetSchema(): array
+    public static function provideLinkFormGetSchema(): array
     {
         return [
             'Valid existing record' => [
@@ -202,7 +202,7 @@ public function testExcludeLinkTextField(bool $excludeLinkTextField): void
         }
     }
 
-    public function provideExcludeLinkTextField(): array
+    public static function provideExcludeLinkTextField(): array
     {
         return [
             'exclude field' => [
@@ -311,7 +311,7 @@ public function testLinkFormPost(
         }
     }
 
-    public function provideLinkFormPost(): array
+    public static function provideLinkFormPost(): array
     {
         // note: not duplicating code paths already tested with provideLinkFormGetSchema()
         // e.g. Reject Invalid ID
@@ -444,7 +444,7 @@ public function testLinkFormReadonly(string $idType, string $fail, bool $expecte
         $this->assertSame($expected, $actual);
     }
 
-    public function provideLinkFormReadOnly(): array
+    public static function provideLinkFormReadOnly(): array
     {
         return [
             [
@@ -495,7 +495,7 @@ public function testLinkData(
         }
     }
 
-    public function provideLinkData(): array
+    public static function provideLinkData(): array
     {
         return [
             'Valid' => [
@@ -567,7 +567,7 @@ public function testLinkArchive(
         }
     }
 
-    public function provideLinkArchive(): array
+    public static function provideLinkArchive(): array
     {
         return [
             'Valid' => [
@@ -669,7 +669,7 @@ public function testLinkSort(
         );
     }
 
-    public function provideLinkSort(): array
+    public static function provideLinkSort(): array
     {
         return [
             'Success' => [
diff --git a/tests/php/Form/MultiLinkFieldTest.php b/tests/php/Form/MultiLinkFieldTest.php
index 5865f3c8..5306df68 100644
--- a/tests/php/Form/MultiLinkFieldTest.php
+++ b/tests/php/Form/MultiLinkFieldTest.php
@@ -10,7 +10,7 @@
 
 class MultiLinkFieldTest extends SapphireTest
 {
-    public function provideConvertValueToArray(): array
+    public static function provideConvertValueToArray(): array
     {
         return [
             'empty string' => [
diff --git a/tests/php/Models/LinkTest.php b/tests/php/Models/LinkTest.php
index 2ba5a9f0..380e1b83 100644
--- a/tests/php/Models/LinkTest.php
+++ b/tests/php/Models/LinkTest.php
@@ -119,7 +119,7 @@ public function testLinkType(string $class, bool $expected): void
             : $this->assertNull($linkTypeField, 'We do not expect to a find link type field');
     }
 
-    public function linkTypeProvider(): array
+    public static function linkTypeProvider(): array
     {
         return [
             [EmailLink::class, false],
@@ -152,7 +152,7 @@ public function testGetVersionedState(): void
         $this->assertEquals('unversioned', $link->getVersionedState());
     }
 
-    public function provideGetUrl(): array
+    public static function provideGetUrl(): array
     {
         return [
             'internal link / page only' => [
@@ -242,7 +242,7 @@ public function testGetUrl(string $identifier, string $class, string $expected):
         $this->assertSame($expected, $link->getURL(), 'We expect specific URL value');
     }
 
-    function provideDefaultLinkTitle(): array
+    static function provideDefaultLinkTitle(): array
     {
         return [
             'page link' => [
@@ -314,7 +314,7 @@ public function testDefaultLinkTitle(string $identifier, string $class, string $
         $this->assertEquals($expected, $link->getTitle());
     }
 
-    public function provideOwner()
+    public static function provideOwner()
     {
         return [
             'null because there is no owner' => [
@@ -421,7 +421,7 @@ public function testCanPermissions(string $linkPermission, string $ownerPermissi
         $this->assertFalse($link->can($permissionName));
     }
 
-    public function provideCanPermissions()
+    public static function provideCanPermissions()
     {
         return [
             'canView' => [
@@ -447,7 +447,7 @@ public function testCanCreate()
         $this->assertTrue($link->can('Create'));
     }
 
-    public function provideLinkType(): array
+    public static function provideLinkType(): array
     {
         return [
             'email_link_type' => [
diff --git a/tests/php/Services/LinkTypeServiceTest.php b/tests/php/Services/LinkTypeServiceTest.php
index c55b2d58..e9eeada4 100644
--- a/tests/php/Services/LinkTypeServiceTest.php
+++ b/tests/php/Services/LinkTypeServiceTest.php
@@ -49,7 +49,7 @@ public function testGenerateAllLinkTypes()
         $this->assertSame($expected, $types);
     }
 
-    public function keyClassDataProvider(): array
+    public static function keyClassDataProvider(): array
     {
         return [
             'sitetree_key' => [
diff --git a/tests/php/Traits/AllowedLinkClassesTraitTest.php b/tests/php/Traits/AllowedLinkClassesTraitTest.php
index 056aa0b8..a7a08794 100644
--- a/tests/php/Traits/AllowedLinkClassesTraitTest.php
+++ b/tests/php/Traits/AllowedLinkClassesTraitTest.php
@@ -53,7 +53,7 @@ public function testSetAllowedTypes(array $enabled, array $expected)
         $this->assertEquals($expected, $result);
     }
 
-    public function allowedTypesDataProvider() : array
+    public static function allowedTypesDataProvider() : array
     {
         return [
             'allow all Link classes' => [
@@ -91,7 +91,7 @@ public function testSetAllowedTypesException(array $enabled)
         $trait->setAllowedTypes($enabled);
     }
 
-    public function provideTypesExceptionDataProvider() : array
+    public static function provideTypesExceptionDataProvider() : array
     {
         return [
             'allow all with empty array' => [
@@ -106,7 +106,7 @@ public function provideTypesExceptionDataProvider() : array
         ];
     }
 
-    public function sortedTypesDataProvider() : array
+    public static function sortedTypesDataProvider() : array
     {
         return [
             'sort all allowed Link classes' => [
@@ -199,7 +199,7 @@ public function testGetTypesPropCanCreate(): void
         $this->assertFalse($json['testphone']['allowed']);
     }
 
-    public function provideGetTypesProp() : array
+    public static function provideGetTypesProp() : array
     {
         return [
             'SiteTreeLink props' => [