diff --git a/src/node_types.cc b/src/node_types.cc
index 4b9f86f0d54d8c..bd7ea9cf23fff7 100644
--- a/src/node_types.cc
+++ b/src/node_types.cc
@@ -34,6 +34,7 @@ namespace {
   V(SharedArrayBuffer)                                                        \
   V(Proxy)                                                                    \
   V(WebAssemblyCompiledModule)                                                \
+  V(ModuleNamespaceObject)                                                    \
 
 
 #define V(type) \
diff --git a/test/parallel/test-util-types.js b/test/parallel/test-util-types.js
index aa45d1604bfe00..924869896869c0 100644
--- a/test/parallel/test-util-types.js
+++ b/test/parallel/test-util-types.js
@@ -1,4 +1,4 @@
-// Flags: --harmony-bigint
+// Flags: --harmony-bigint --experimental-vm-modules
 /* global SharedArrayBuffer */
 'use strict';
 const common = require('../common');
@@ -126,3 +126,11 @@ for (const [ value, _method ] of [
     assert.deepStrictEqual(yup, expected[testedFunc]);
   }
 }
+
+(async () => {
+  const m = new vm.Module('');
+  await m.link(() => 0);
+  m.instantiate();
+  await m.evaluate();
+  assert.ok(types.isModuleNamespaceObject(m.namespace));
+})();