diff --git a/include/yaml-cpp/node/detail/node.h b/include/yaml-cpp/node/detail/node.h
index bbb497d..5f26738 100644
--- a/include/yaml-cpp/node/detail/node.h
+++ b/include/yaml-cpp/node/detail/node.h
@@ -13,13 +13,14 @@
 #include "yaml-cpp/node/ptr.h"
 #include "yaml-cpp/node/detail/node_ref.h"
 #include <set>
-#include <boost/utility.hpp>
 
 namespace YAML {
 namespace detail {
-class node : private boost::noncopyable {
+class node {
  public:
   node() : m_pRef(new node_ref) {}
+  node(const node&) = delete;
+  node& operator=(const node&) = delete;
 
   bool is(const node& rhs) const { return m_pRef == rhs.m_pRef; }
   const node_ref* ref() const { return m_pRef.get(); }
diff --git a/include/yaml-cpp/node/detail/node_data.h b/include/yaml-cpp/node/detail/node_data.h
index 6030867..64bbc05 100644
--- a/include/yaml-cpp/node/detail/node_data.h
+++ b/include/yaml-cpp/node/detail/node_data.h
@@ -7,8 +7,6 @@
 #pragma once
 #endif
 
-#include <boost/noncopyable.hpp>
-#include <boost/utility.hpp>
 #include <list>
 #include <map>
 #include <string>
@@ -29,9 +27,11 @@ class node;
 
 namespace YAML {
 namespace detail {
-class YAML_CPP_API node_data : private boost::noncopyable {
+class YAML_CPP_API node_data {
  public:
   node_data();
+  node_data(const node_data&) = delete;
+  node_data& operator=(const node_data&) = delete;
 
   void mark_defined();
   void set_mark(const Mark& mark);
diff --git a/include/yaml-cpp/node/detail/node_ref.h b/include/yaml-cpp/node/detail/node_ref.h
index 26b1872..d8a94f8 100644
--- a/include/yaml-cpp/node/detail/node_ref.h
+++ b/include/yaml-cpp/node/detail/node_ref.h
@@ -11,13 +11,14 @@
 #include "yaml-cpp/node/type.h"
 #include "yaml-cpp/node/ptr.h"
 #include "yaml-cpp/node/detail/node_data.h"
-#include <boost/utility.hpp>
 
 namespace YAML {
 namespace detail {
-class node_ref : private boost::noncopyable {
+class node_ref {
  public:
   node_ref() : m_pData(new node_data) {}
+  node_ref(const node_ref&) = delete;
+  node_ref& operator=(const node_ref&) = delete;
 
   bool is_defined() const { return m_pData->is_defined(); }
   const Mark& mark() const { return m_pData->mark(); }