diff --git a/stubs/Php81.phpstub b/stubs/Php81.phpstub
index 984fef860..547ee0fa3 100644
--- a/stubs/Php81.phpstub
+++ b/stubs/Php81.phpstub
@@ -57,7 +57,7 @@ namespace {
 
     /** @psalm-immutable */
     class ReflectionIntersectionType extends ReflectionType {
-        /** @return non-empty-list<ReflectionType> */
+        /** @return non-empty-list<ReflectionNamedType> */
         public function getTypes(): array {}
 
         /** @return false */
diff --git a/stubs/Php82.phpstub b/stubs/Php82.phpstub
index fd153f3e5..5ac5ee5f3 100644
--- a/stubs/Php82.phpstub
+++ b/stubs/Php82.phpstub
@@ -4,4 +4,10 @@ namespace {
         /** @psalm-pure */
         public function isReadOnly(): bool {}
     }
+
+    /** @psalm-immutable */
+    class ReflectionUnionType extends ReflectionType {
+        /** @return non-empty-list<ReflectionNamedType|ReflectionIntersectionType> */
+        public function getTypes(): array {}
+    }
 }