diff --git a/qjsc.c b/qjsc.c
index 13e6fa5..f9e1928 100644
--- a/qjsc.c
+++ b/qjsc.c
@@ -76,6 +76,7 @@ static const FeatureEntry feature_list[] = {
     { "promise", "Promise" },
 #define FE_MODULE_LOADER 9
     { "module-loader", NULL },
+    { "weakref", "WeakRef" },
 };
 
 void namelist_add(namelist_t *lp, const char *name, const char *short_name,