diff --git a/src/Generator.php b/src/Generator.php
index a6a4a76..cb5aaaa 100644
--- a/src/Generator.php
+++ b/src/Generator.php
@@ -176,15 +176,17 @@ private function all(string $namespace): iterable
             );
         }
 
-        foreach ($schemaRegistry->unknownSchemas() as $schema) {
-            yield from Schema::generate(
-                $schema['name'],
-                $this->dirname($namespace . 'Schema/' . $schema['className']),
-                $this->basename($namespace . 'Schema/' . $schema['className']),
-                $schema['schema'],
-                $schemaRegistry,
-                $namespace . 'Schema'
-            );
+        while ($schemaRegistry->hasUnknownSchemas()) {
+            foreach ($schemaRegistry->unknownSchemas() as $schema) {
+                yield from Schema::generate(
+                    $schema['name'],
+                    $this->dirname($namespace . 'Schema/' . $schema['className']),
+                    $this->basename($namespace . 'Schema/' . $schema['className']),
+                    $schema['schema'],
+                    $schemaRegistry,
+                    $namespace . 'Schema'
+                );
+            }
         }
     }
 
diff --git a/src/SchemaRegistry.php b/src/SchemaRegistry.php
index 02976c8..c34a94f 100644
--- a/src/SchemaRegistry.php
+++ b/src/SchemaRegistry.php
@@ -49,8 +49,15 @@ public function get(\cebe\openapi\spec\Schema $schema, string $fallbackName = ''
         return $className;
     }
 
+    public function hasUnknownSchemas(): bool
+    {
+        return count($this->unknownSchemas) > 0;
+    }
+
     public function unknownSchemas(): iterable
     {
-        yield from $this->unknownSchemas;
+        $unknownSchemas = $this->unknownSchemas;
+        $this->unknownSchemas = [];
+        yield from $unknownSchemas;
     }
 }