tests/src/Functional/Controller/LinkitControllerTest.php | 2 +-
 tests/src/Functional/LinkitUpdateTest.php                | 2 +-
 tests/src/Functional/MatcherAdminTest.php                | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/src/Functional/Controller/LinkitControllerTest.php b/tests/src/Functional/Controller/LinkitControllerTest.php
index e931e85..0635e64 100644
--- a/tests/src/Functional/Controller/LinkitControllerTest.php
+++ b/tests/src/Functional/Controller/LinkitControllerTest.php
@@ -24,7 +24,7 @@ class LinkitControllerTest extends LinkitBrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     $this->linkitProfile = $this->createProfile();
diff --git a/tests/src/Functional/LinkitUpdateTest.php b/tests/src/Functional/LinkitUpdateTest.php
index 140fe12..851e6eb 100644
--- a/tests/src/Functional/LinkitUpdateTest.php
+++ b/tests/src/Functional/LinkitUpdateTest.php
@@ -28,7 +28,7 @@ class LinkitUpdateTest extends UpdatePathTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
     $this->configFactory = $this->container->get('config.factory');
   }
diff --git a/tests/src/Functional/MatcherAdminTest.php b/tests/src/Functional/MatcherAdminTest.php
index 2db6653..0733744 100644
--- a/tests/src/Functional/MatcherAdminTest.php
+++ b/tests/src/Functional/MatcherAdminTest.php
@@ -34,7 +34,7 @@ class MatcherAdminTest extends LinkitBrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
     $this->manager = $this->container->get('plugin.manager.linkit.matcher');