diff --git a/include/yaml-cpp/node/detail/impl.h b/include/yaml-cpp/node/detail/impl.h
index f6d218c..e419827 100644
--- a/include/yaml-cpp/node/detail/impl.h
+++ b/include/yaml-cpp/node/detail/impl.h
@@ -9,7 +9,7 @@
 
 #include "yaml-cpp/node/detail/node.h"
 #include "yaml-cpp/node/detail/node_data.h"
-#include <boost/type_traits.hpp>
+#include <type_traits>
 
 namespace YAML {
 namespace detail {
@@ -23,8 +23,8 @@ struct get_idx {
 
 template <typename Key>
 struct get_idx<
-    Key, typename boost::enable_if_c<boost::is_unsigned<Key>::value &&
-                                     !boost::is_same<Key, bool>::value>::type> {
+    Key, typename std::enable_if<std::is_unsigned<Key>::value &&
+                                     !std::is_same<Key, bool>::value>::type> {
   static node* get(const std::vector<node*>& sequence, const Key& key,
                    shared_memory_holder /* pMemory */) {
     return key < sequence.size() ? sequence[key] : 0;
@@ -41,7 +41,7 @@ struct get_idx<
 };
 
 template <typename Key>
-struct get_idx<Key, typename boost::enable_if<boost::is_signed<Key> >::type> {
+struct get_idx<Key, typename std::enable_if<std::is_signed<Key>::value >::type> {
   static node* get(const std::vector<node*>& sequence, const Key& key,
                    shared_memory_holder pMemory) {
     return key >= 0 ? get_idx<std::size_t>::get(