diff --git a/include/cpptoml.h b/include/cpptoml.h
index 5a00da3..1dc9fd1 100644
--- a/include/cpptoml.h
+++ b/include/cpptoml.h
@@ -14,6 +14,7 @@
 #include <cstring>
 #include <fstream>
 #include <iomanip>
+#include <limits>
 #include <map>
 #include <memory>
 #include <sstream>