diff --git a/spec/Packagist/Api/Result/Package/DistSpec.php b/spec/Packagist/Api/Result/Package/DistSpec.php
index d55ac25..fa8196a 100644
--- a/spec/Packagist/Api/Result/Package/DistSpec.php
+++ b/spec/Packagist/Api/Result/Package/DistSpec.php
@@ -9,7 +9,7 @@
 
 class DistSpec extends ObjectBehavior
 {
-    public function let()
+    public function let(): void
     {
         $this->fromArray([
             'type'      => 'git',
@@ -19,32 +19,32 @@ public function let()
         ]);
     }
 
-    public function it_is_initializable()
+    public function it_is_initializable(): void
     {
         $this->shouldHaveType(Dist::class);
     }
 
-    public function it_gets_type()
+    public function it_gets_type(): void
     {
         $this->getType()->shouldReturn('git');
     }
 
-    public function it_gets_url()
+    public function it_gets_url(): void
     {
         $this->getUrl()->shouldReturn('https://github.com/Sylius/Sylius.git');
     }
 
-    public function it_gets_reference()
+    public function it_gets_reference(): void
     {
         $this->getReference()->shouldReturn('cb0a489db41707d5df078f1f35e028e04ffd9e8e');
     }
 
-    public function it_gets_shasum()
+    public function it_gets_shasum(): void
     {
         $this->getShasum()->shouldReturn('cb0a489db41707d5df078f1f35e028e04ffd9e8e');
     }
 
-    public function it_can_deal_with_nullable_reference()
+    public function it_can_deal_with_nullable_reference(): void
     {
         $this->fromArray([
             'type'      => 'git',
@@ -56,7 +56,7 @@ public function it_can_deal_with_nullable_reference()
         $this->getReference()->shouldReturn(null);
     }
 
-    public function it_can_deal_with_nullable_shasum()
+    public function it_can_deal_with_nullable_shasum(): void
     {
         $this->fromArray([
             'type'      => 'git',
diff --git a/src/Packagist/Api/Result/AbstractResult.php b/src/Packagist/Api/Result/AbstractResult.php
index 6259424..c51c5b9 100644
--- a/src/Packagist/Api/Result/AbstractResult.php
+++ b/src/Packagist/Api/Result/AbstractResult.php
@@ -13,7 +13,26 @@ public function fromArray(array $data): void
         $inflector = InflectorFactory::create()->build();
         foreach ($data as $key => $value) {
             $property = $inflector->camelize($key);
+            if (null === $value && !$this->isNullable($property)) {
+                continue;
+            }
             $this->$property = $value;
         }
     }
+
+    private function isNullable(string $property): bool
+    {
+        if (PHP_MAJOR_VERSION < 8 || !property_exists($this, $property)) {
+            return true;
+        }
+
+        $reflection = new \ReflectionClass($this);
+        try {
+            $reflectionProperty = $reflection->getProperty($property);
+        } catch (\ReflectionException $exception) {
+            return false;
+        }
+
+        return null === $reflectionProperty->getDefaultValue();
+    }
 }
diff --git a/src/Packagist/Api/Result/Package.php b/src/Packagist/Api/Result/Package.php
index ac889e5..4bafc96 100644
--- a/src/Packagist/Api/Result/Package.php
+++ b/src/Packagist/Api/Result/Package.php
@@ -22,7 +22,7 @@ class Package extends AbstractResult
 
     protected string $repository = '';
 
-    protected ?Downloads $downloads;
+    protected ?Downloads $downloads = null;
 
     protected int $favers = 0;
 
diff --git a/src/Packagist/Api/Result/Package/Dist.php b/src/Packagist/Api/Result/Package/Dist.php
index 2f9cd96..983b5ad 100644
--- a/src/Packagist/Api/Result/Package/Dist.php
+++ b/src/Packagist/Api/Result/Package/Dist.php
@@ -8,13 +8,13 @@
 
 class Dist extends AbstractResult
 {
-    protected ?string $shasum;
+    protected ?string $shasum = null;
 
     protected string $type;
 
     protected string $url;
 
-    protected ?string $reference;
+    protected ?string $reference = null;
 
     public function getShasum(): ?string
     {