diff --git a/src/node_worker.cc b/src/node_worker.cc
index d8cad06cd0655f..75b20721f27071 100644
--- a/src/node_worker.cc
+++ b/src/node_worker.cc
@@ -268,7 +268,6 @@ class WorkerThreadData {
   uv_loop_t loop_;
   bool loop_init_failed_ = true;
   DeleteFnPtr<IsolateData, FreeIsolateData> isolate_data_;
-  const SnapshotData* snapshot_data_ = nullptr;
   friend class Worker;
 };
 
diff --git a/src/node_worker.h b/src/node_worker.h
index 873029096c465e..3ad318803d8ae0 100644
--- a/src/node_worker.h
+++ b/src/node_worker.h
@@ -66,9 +66,6 @@ class Worker : public AsyncWrap {
   std::string_view name() const { return name_; }
 
   static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void CloneParentEnvVars(
-      const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void SetEnvVars(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void StartThread(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void StopThread(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void HasRef(const v8::FunctionCallbackInfo<v8::Value>& args);