diff --git a/composer.json b/composer.json
index dc6d245..ac6f236 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "silverstripe/cms": "^6"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^11.3",
         "squizlabs/php_codesniffer": "^3",
         "silverstripe/reports": "^6",
         "silverstripe/siteconfig": "^6",
diff --git a/tests/SegmentFieldModifier/IDSegmentFieldModifierTest.php b/tests/SegmentFieldModifier/IDSegmentFieldModifierTest.php
index 55e58e8..8dd3f7e 100644
--- a/tests/SegmentFieldModifier/IDSegmentFieldModifierTest.php
+++ b/tests/SegmentFieldModifier/IDSegmentFieldModifierTest.php
@@ -28,7 +28,7 @@ protected function getNewFormMock()
     {
         $mock = $this->getMockBuilder(Form::class)
             ->disableOriginalConstructor()
-            ->setMethods(['getRecord'])
+            ->onlyMethods(['getRecord'])
             ->getMock();
 
         $record = new stdClass();
diff --git a/tests/SegmentFieldTest.php b/tests/SegmentFieldTest.php
index 4ffa52d..0bc7fd8 100644
--- a/tests/SegmentFieldTest.php
+++ b/tests/SegmentFieldTest.php
@@ -63,7 +63,7 @@ protected function getNewFormMock()
     {
         return $this->getMockBuilder(Form::class)
             ->disableOriginalConstructor()
-            ->setMethods(null)
+            ->onlyMethods(null)
             ->getMock();
     }
 }