diff --git a/deps/v8/test/inspector/isolate-data.cc b/deps/v8/test/inspector/isolate-data.cc
index 927bd31ef4..b1e85ede80 100644
--- a/deps/v8/test/inspector/isolate-data.cc
+++ b/deps/v8/test/inspector/isolate-data.cc
@@ -93,3 +93,10 @@ v8::MaybeLocal<v8::Module> IsolateData::ModuleResolveCallback(
   IsolateData* data = IsolateData::FromContext(context);
   return data->modules_[ToVector(specifier)].Get(data->isolate_);
 }
+
+void IsolateData::FreeContext(v8::Local<v8::Context> context) {
+  int context_group_id = GetContextGroupId(context);
+  auto it = contexts_.find(context_group_id);
+  if (it == contexts_.end()) return;
+  contexts_.erase(it);
+}
diff --git a/deps/v8/test/inspector/isolate-data.h b/deps/v8/test/inspector/isolate-data.h
index 34f0ae8308..52a3fb3206 100644
--- a/deps/v8/test/inspector/isolate-data.h
+++ b/deps/v8/test/inspector/isolate-data.h
@@ -39,6 +39,7 @@ class IsolateData {
   void RegisterModule(v8::Local<v8::Context> context,
                       v8::internal::Vector<uint16_t> name,
                       v8::ScriptCompiler::Source* source);
+  void FreeContext(v8::Local<v8::Context> context);
 
  private:
   struct VectorCompare {