diff --git a/binding.c b/binding.c
index eadea27..cf2faca 100644
--- a/binding.c
+++ b/binding.c
@@ -8,6 +8,13 @@ typedef struct {
   js_context_t *context;
 } bare_realm_t;
 
+static void
+on_realm_finalize (js_env_t *env, void *data, void *finalize_hint) {
+  bare_realm_t *realm = data;
+
+  js_destroy_context(env, realm->context);
+}
+
 static js_value_t *
 bare_realm_create (js_env_t *env, js_callback_info_t *info) {
   int err;
@@ -21,6 +28,9 @@ bare_realm_create (js_env_t *env, js_callback_info_t *info) {
   err = js_create_context(env, &realm->context);
   if (err < 0) return NULL;
 
+  err = js_add_finalizer(env, handle, (void *) realm, on_realm_finalize, NULL, NULL);
+  assert(err == 0);
+
   return handle;
 }
 
diff --git a/test.js b/test.js
index 2b2d52c..a34d7d7 100644
--- a/test.js
+++ b/test.js
@@ -3,7 +3,6 @@ const Realm = require('.')
 
 test('basic', async (t) => {
   const realm = new Realm()
-  t.teardown(() => realm.destroy())
 
   const globalThat = realm.evaluate('globalThis')