diff --git a/composer.json b/composer.json
index 99aa15f..5626d20 100644
--- a/composer.json
+++ b/composer.json
@@ -16,6 +16,7 @@
 	"prefer-stable": true,
 	"require": {
 		"php": ">=5.3.0",
+		"wikibase/data-model": "~2.5",
 		"addwiki/mediawiki-api-base": "~0.2",
 		"doctrine/cache": "~1.4",
 		"ppp/wikibase-entity-store": "*",
diff --git a/tests/phpunit/TreeSimplifier/MissingObjectTripleNodeSimplifierTest.php b/tests/phpunit/TreeSimplifier/MissingObjectTripleNodeSimplifierTest.php
index 006fde2..a755fa3 100644
--- a/tests/phpunit/TreeSimplifier/MissingObjectTripleNodeSimplifierTest.php
+++ b/tests/phpunit/TreeSimplifier/MissingObjectTripleNodeSimplifierTest.php
@@ -110,7 +110,7 @@ public function simplificationProvider() {
 		$list = array();
 
 		//Value
-		$douglasAdamItem = Item::newEmpty();
+		$douglasAdamItem = new Item();
 		$douglasAdamItem->setId(new ItemId('Q42'));
 		$birthPlaceStatement = new Statement(new Claim(
 			new PropertyValueSnak(new PropertyId('P214'), new StringValue('113230702'))
@@ -138,7 +138,7 @@ public function simplificationProvider() {
 		);
 
 		//SomeValue
-		$douglasAdamItem = Item::newEmpty();
+		$douglasAdamItem = new Item();
 		$douglasAdamItem->setId(new ItemId('Q42'));
 		$birthPlaceStatement = new Statement(new Claim(new PropertySomeValueSnak(new PropertyId('P19'))));
 		$birthPlaceStatement->setGuid('42');
@@ -155,7 +155,7 @@ public function simplificationProvider() {
 		);
 
 		//No result
-		$douglasAdamItem = Item::newEmpty();
+		$douglasAdamItem = new Item();
 		$douglasAdamItem->setId(new ItemId('Q42'));
 		$list[] = array(
 			new TripleNode(
@@ -169,7 +169,7 @@ public function simplificationProvider() {
 		);
 
 		//Parsing
-		$douglasAdamItem = Item::newEmpty();
+		$douglasAdamItem = new Item();
 		$douglasAdamItem->setId(new ItemId('Q42'));
 		$list[] = array(
 			new TripleNode(
diff --git a/tests/phpunit/ValueFormatters/WikibaseEntityIdFormatterTest.php b/tests/phpunit/ValueFormatters/WikibaseEntityIdFormatterTest.php
index dec5772..108beaa 100644
--- a/tests/phpunit/ValueFormatters/WikibaseEntityIdFormatterTest.php
+++ b/tests/phpunit/ValueFormatters/WikibaseEntityIdFormatterTest.php
@@ -81,7 +81,7 @@ protected function getInstance(FormatterOptions $options) {
 	}
 
 	private function getQ42() {
-		$item = Item::newEmpty();
+		$item = new Item();
 		$item->setId( new ItemId('Q42'));
 		$item->getFingerprint()->setLabel('en', 'Douglas Adams');
 
diff --git a/tests/phpunit/ValueFormatters/WikibaseEntityIdJsonLdFormatterTest.php b/tests/phpunit/ValueFormatters/WikibaseEntityIdJsonLdFormatterTest.php
index 3824a2e..13ea2f5 100644
--- a/tests/phpunit/ValueFormatters/WikibaseEntityIdJsonLdFormatterTest.php
+++ b/tests/phpunit/ValueFormatters/WikibaseEntityIdJsonLdFormatterTest.php
@@ -202,7 +202,7 @@ protected function getInstance(FormatterOptions $options) {
 	}
 
 	private function getQ42() {
-		$item = Item::newEmpty();
+		$item = new Item();
 		$item->setId( new ItemId('Q42'));
 		$item->getFingerprint()->setLabel('en', 'Douglas Adams');
 		$item->getFingerprint()->setDescription('en', 'Author');
diff --git a/tests/phpunit/ValueFormatters/WikibaseResourceNodeFormatterFactoryTest.php b/tests/phpunit/ValueFormatters/WikibaseResourceNodeFormatterFactoryTest.php
index 737a670..5b3779a 100644
--- a/tests/phpunit/ValueFormatters/WikibaseResourceNodeFormatterFactoryTest.php
+++ b/tests/phpunit/ValueFormatters/WikibaseResourceNodeFormatterFactoryTest.php
@@ -160,7 +160,7 @@ public function testFormatterFormatWikibaseProperty() {
 	}
 
 	private function getQ42() {
-		$item = Item::newEmpty();
+		$item = new Item();
 		$item->setId( new ItemId('Q42'));
 		$item->getFingerprint()->setLabel('en', 'Douglas Adams');