diff --git a/src/ClassReflection.php b/src/ClassReflection.php
index e192ef9..0d3525c 100644
--- a/src/ClassReflection.php
+++ b/src/ClassReflection.php
@@ -602,6 +602,13 @@ public function __serialize(): array
         return $vars;
     }
 
+    public function __unserialize(array $data): void
+    {
+        foreach ($data as $name => $value) {
+            $this->{$name} = $value;
+        }
+    }
+
     public function __clone()
     {
         if ((debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1]['class'] ?? null) !== self::class) {
diff --git a/src/MethodReflection.php b/src/MethodReflection.php
index c7f6d8f..72795ef 100644
--- a/src/MethodReflection.php
+++ b/src/MethodReflection.php
@@ -362,6 +362,13 @@ public function __serialize(): array
         return $data;
     }
 
+    public function __unserialize(array $data): void
+    {
+        foreach ($data as $name => $value) {
+            $this->{$name} = $value;
+        }
+    }
+
     public function __clone()
     {
         if ((debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1]['class'] ?? null) !== self::class) {
diff --git a/src/ParameterReflection.php b/src/ParameterReflection.php
index 0ff0655..3d21232 100644
--- a/src/ParameterReflection.php
+++ b/src/ParameterReflection.php
@@ -107,6 +107,13 @@ public function __serialize(): array
         return $data;
     }
 
+    public function __unserialize(array $data): void
+    {
+        foreach ($data as $name => $value) {
+            $this->{$name} = $value;
+        }
+    }
+
     /**
      * @return ?positive-int
      */
diff --git a/src/PropertyReflection.php b/src/PropertyReflection.php
index 60a7e2e..b929fde 100644
--- a/src/PropertyReflection.php
+++ b/src/PropertyReflection.php
@@ -161,6 +161,13 @@ public function __serialize(): array
         return $data;
     }
 
+    public function __unserialize(array $data): void
+    {
+        foreach ($data as $name => $value) {
+            $this->{$name} = $value;
+        }
+    }
+
     public function __clone()
     {
         if ((debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1]['class'] ?? null) !== self::class) {