diff --git a/judge/caching.py b/judge/caching.py
index 8fd40df..66ea686 100644
--- a/judge/caching.py
+++ b/judge/caching.py
@@ -83,8 +83,17 @@ def cache_wrapper(prefix, timeout=None):
                 if result is not None:
                     _set_l0(key, result)
 
+        def dirty_multi(args_list):
+            keys = []
+            for args in args_list:
+                keys.append(get_key(func, *args))
+            cache.delete_many(keys)
+            if l0_cache:
+                l0_cache.delete_many(keys)
+
         wrapper.dirty = dirty
         wrapper.prefetch_multi = prefetch_multi
+        wrapper.dirty_multi = dirty_multi
 
         return wrapper
 
diff --git a/judge/ratings.py b/judge/ratings.py
index de2c313..f255e31 100644
--- a/judge/ratings.py
+++ b/judge/ratings.py
@@ -146,6 +146,7 @@ def recalculate_ratings(ranking, old_mean, times_ranked, historical_p):
 
 def rate_contest(contest):
     from judge.models import Rating, Profile
+    from judge.models.profile import _get_basic_info
 
     rating_subquery = Rating.objects.filter(user=OuterRef("user"))
     rating_sorted = rating_subquery.order_by("-contest__end_time")
@@ -237,6 +238,8 @@ def rate_contest(contest):
             )
         )
 
+    _get_basic_info.dirty_multi([(uid,) for uid in user_ids])
+
 
 RATING_LEVELS = [
     "Newbie",