diff --git a/common.gypi b/common.gypi
index 39229ef58787..2967d1e63a48 100644
--- a/common.gypi
+++ b/common.gypi
@@ -44,7 +44,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.39',
+    'v8_embedder_string': '-node.40',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/heap/mark-compact.cc b/deps/v8/src/heap/mark-compact.cc
index 90bf197a8c76..adf8f97f3b54 100644
--- a/deps/v8/src/heap/mark-compact.cc
+++ b/deps/v8/src/heap/mark-compact.cc
@@ -2536,17 +2536,7 @@ void MarkCompactCollector::RetainMaps() {
                 MarkingHelper::WorklistTarget::kRegular, map);
           }
         }
-        Tagged<Object> prototype = map->prototype();
-        if (age > 0 && IsHeapObject(prototype) &&
-            MarkingHelper::IsUnmarkedAndNotAlwaysLive(
-                heap_, marking_state_, Cast<HeapObject>(prototype))) {
-          // The prototype is not marked, age the map.
-          new_age = age - 1;
-        } else {
-          // The prototype and the constructor are marked, this map keeps only
-          // transition tree alive, not JSObjects. Do not age the map.
-          new_age = age;
-        }
+        new_age = age > 0 ? age - 1 : 0;
       } else {
         new_age = v8_flags.retain_maps_for_n_gc;
       }