diff --git a/common.gypi b/common.gypi
index 8b81a0a39dd09d..bb27df43d5cb7c 100644
--- a/common.gypi
+++ b/common.gypi
@@ -36,7 +36,7 @@
 
     # 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.72',
+    'v8_embedder_string': '-node.73',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/heap/heap.cc b/deps/v8/src/heap/heap.cc
index 5d5eaae0683b74..62033444ed0427 100644
--- a/deps/v8/src/heap/heap.cc
+++ b/deps/v8/src/heap/heap.cc
@@ -3347,6 +3347,10 @@ void Heap::MakeHeapIterable() {
   mark_compact_collector()->EnsureSweepingCompleted();
 }
 
+void Heap::EnsureSweepingCompleted() {
+  mark_compact_collector()->EnsureSweepingCompleted();
+}
+
 namespace {
 
 double ComputeMutatorUtilizationImpl(double mutator_speed, double gc_speed) {
diff --git a/deps/v8/src/heap/heap.h b/deps/v8/src/heap/heap.h
index b2105a96badc2f..4ca8c3b201fb03 100644
--- a/deps/v8/src/heap/heap.h
+++ b/deps/v8/src/heap/heap.h
@@ -1001,6 +1001,8 @@ class Heap {
       Reservation* reservations, const std::vector<HeapObject>& large_objects,
       const std::vector<Address>& maps);
 
+  void EnsureSweepingCompleted();
+
   IncrementalMarking* incremental_marking() {
     return incremental_marking_.get();
   }
diff --git a/deps/v8/src/json/json-parser.cc b/deps/v8/src/json/json-parser.cc
index da2f60d3209b4a..2ac4e727e0bdb3 100644
--- a/deps/v8/src/json/json-parser.cc
+++ b/deps/v8/src/json/json-parser.cc
@@ -633,6 +633,11 @@ Handle<Object> JsonParser<Char>::BuildJsonObject(
         DCHECK_EQ(mutable_double_address, end);
       }
 #endif
+      // Before setting the length of mutable_double_buffer back to zero, we
+      // must ensure that the sweeper is not running or has already swept the
+      // object's page. Otherwise the GC can add the contents of
+      // mutable_double_buffer to the free list.
+      isolate()->heap()->EnsureSweepingCompleted();
       mutable_double_buffer->set_length(0);
     }
   }