diff --git a/src/Bundle/ChillMainBundle/Tests/Serializer/Normalizer/UserNormalizerTest.php b/src/Bundle/ChillMainBundle/Tests/Serializer/Normalizer/UserNormalizerTest.php
index a5dadf83e..5fa53d12f 100644
--- a/src/Bundle/ChillMainBundle/Tests/Serializer/Normalizer/UserNormalizerTest.php
+++ b/src/Bundle/ChillMainBundle/Tests/Serializer/Normalizer/UserNormalizerTest.php
@@ -61,6 +61,11 @@ final class UserNormalizerTest extends TestCase
             {
                 return true;
             }
+
+            public function getSupportedTypes(?string $format): array
+            {
+                return [];
+            }
         });
 
         $this->assertEquals($expected, $normalizer->normalize($user, $format, $context));
diff --git a/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonJsonNormalizerTest.php b/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonJsonNormalizerTest.php
index 41aadf4fb..d61ce7a47 100644
--- a/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonJsonNormalizerTest.php
+++ b/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonJsonNormalizerTest.php
@@ -145,12 +145,12 @@ final class PersonJsonNormalizerTest extends TestCase
 
         // Inner normalizer that echoes values or simple conversions
         $inner = new class () implements NormalizerInterface {
-            public function supportsNormalization($data, $format = null): bool
+            public function supportsNormalization($data, $format = null, array $context = []): bool
             {
                 return true;
             }
 
-            public function normalize($object, $format = null, array $context = [])
+            public function normalize($object, $format = null, array $context = []): float|int|bool|\ArrayObject|array|string|null
             {
                 // For scalars and arrays, return as-is; for objects, return string or id when possible
                 if (\is_scalar($object) || null === $object) {
@@ -169,6 +169,11 @@ final class PersonJsonNormalizerTest extends TestCase
                 // default stub
                 return (string) (method_exists($object, 'getId') ? $object->getId() : 'normalized');
             }
+
+            public function getSupportedTypes(?string $format): array
+            {
+                return [];
+            }
         };
 
         $normalizer->setNormalizer($inner);
diff --git a/src/Bundle/ChillTicketBundle/tests/Serializer/Normalizer/MotiveNormalizerTest.php b/src/Bundle/ChillTicketBundle/tests/Serializer/Normalizer/MotiveNormalizerTest.php
index 1d9ecd10a..fdfc00fdc 100644
--- a/src/Bundle/ChillTicketBundle/tests/Serializer/Normalizer/MotiveNormalizerTest.php
+++ b/src/Bundle/ChillTicketBundle/tests/Serializer/Normalizer/MotiveNormalizerTest.php
@@ -145,10 +145,15 @@ final class MotiveNormalizerTest extends TestCase
                 return ['normalized'];
             }
 
-            public function supportsNormalization($data, ?string $format = null): bool
+            public function supportsNormalization($data, ?string $format = null, array $context = []): bool
             {
                 return true;
             }
+
+            public function getSupportedTypes(?string $format): array
+            {
+                return [];
+            }
         };
     }
 }