diff --git a/src/crypto/crypto_util.h b/src/crypto/crypto_util.h
index 5c717c6fdb0fc4..c111b8ba58dd12 100644
--- a/src/crypto/crypto_util.h
+++ b/src/crypto/crypto_util.h
@@ -545,9 +545,10 @@ void ThrowCryptoError(Environment* env,
                       unsigned long err,  // NOLINT(runtime/int)
                       const char* message = nullptr);
 
-class CipherPushContext {
+class CipherPushContext final {
  public:
-  inline explicit CipherPushContext(Environment* env) : env_(env) {}
+  inline explicit CipherPushContext(Environment* env)
+      : list_(env->isolate()), env_(env) {}
 
   inline void push_back(const char* str) {
     list_.emplace_back(OneByteString(env_->isolate(), str));
@@ -558,7 +559,7 @@ class CipherPushContext {
   }
 
  private:
-  std::vector<v8::Local<v8::Value>> list_;
+  v8::LocalVector<v8::Value> list_;
   Environment* env_;
 };