1 files changed, 1 insertions, 0 deletions
diff --git a/gc.c b/gc.c
index 9c8ac774f2..b1afbb1db7 100644
--- a/gc.c
+++ b/gc.c
@@ -1057,6 +1057,7 @@ obj_free(obj)
 	break;
       case T_MODULE:
       case T_CLASS:
+	rb_clear_cache_by_class((VALUE)obj);
 	st_free_table(RANY(obj)->as.klass.m_tbl);
 	if (RANY(obj)->as.object.iv_tbl) {
 	    st_free_table(RANY(obj)->as.object.iv_tbl);