diff --git a/vendor/jsoncpp/dist/json/json.h b/vendor/jsoncpp/dist/json/json.h
index 06d3147259..970f100c2f 100644
--- a/vendor/jsoncpp/dist/json/json.h
+++ b/vendor/jsoncpp/dist/json/json.h
@@ -6,28 +6,28 @@
 // //////////////////////////////////////////////////////////////////////
 
 /*
-The JsonCpp library's source code, including accompanying documentation, 
+The JsonCpp library's source code, including accompanying documentation,
 tests and demonstration applications, are licensed under the following
 conditions...
 
-The author (Baptiste Lepilleur) explicitly disclaims copyright in all 
-jurisdictions which recognize such a disclaimer. In such jurisdictions, 
+The author (Baptiste Lepilleur) explicitly disclaims copyright in all
+jurisdictions which recognize such a disclaimer. In such jurisdictions,
 this software is released into the Public Domain.
 
 In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
 2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur, and is
 released under the terms of the MIT License (see below).
 
-In jurisdictions which recognize Public Domain property, the user of this 
-software may choose to accept it either as 1) Public Domain, 2) under the 
-conditions of the MIT License (see below), or 3) under the terms of dual 
+In jurisdictions which recognize Public Domain property, the user of this
+software may choose to accept it either as 1) Public Domain, 2) under the
+conditions of the MIT License (see below), or 3) under the terms of dual
 Public Domain/MIT License conditions described here, as they choose.
 
 The MIT License is about as close to Public Domain as a license can get, and is
 described in clear, concise terms at:
 
    http://en.wikipedia.org/wiki/MIT_License
-   
+
 The full text of the MIT License follows:
 
 ========================================================================
@@ -139,6 +139,8 @@ license you like.
 /// Remarks: it is automatically defined in the generated amalgated header.
 // #define JSON_IS_AMALGAMATION
 
+#include <cstdint>
+
 #ifdef JSON_IN_CPPTL
 #include <cpptl/config.h>
 #ifndef JSON_USE_CPPTL
@@ -398,14 +400,14 @@ class JSON_API Exception;
 /** Exceptions which the user cannot easily avoid.
  *
  * E.g. out-of-memory (when we use malloc), stack-overflow, malicious input
- * 
+ *
  * \remark derived from Json::Exception
  */
 class JSON_API RuntimeError;
 /** Exceptions thrown by JSON_ASSERT/JSON_FAIL macros.
  *
  * These are precondition-violations (user bugs) and internal errors (our bugs).
- * 
+ *
  * \remark derived from Json::Exception
  */
 class JSON_API LogicError;