added header for int64_t and uint64_t (fixes #282)
diff --git a/src/json.hpp b/src/json.hpp
index ba7d821..44c867c 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -37,6 +37,7 @@
#include <cmath>
#include <cstddef>
#include <cstdio>
+#include <cstdint>
#include <cstdlib>
#include <functional>
#include <initializer_list>
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 5ee270f..dffce54 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -37,6 +37,7 @@
#include <cmath>
#include <cstddef>
#include <cstdio>
+#include <cstdint>
#include <cstdlib>
#include <functional>
#include <initializer_list>
