diff --git a/toml/types.hpp b/toml/types.hpp
index a292d09..7bf4b2e 100644
--- a/toml/types.hpp
+++ b/toml/types.hpp
@@ -21,6 +21,11 @@ class basic_value;
 using character = char;
 using key = std::string;
 
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ <= 4
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wshadow"
+#endif
+
 using boolean        = bool;
 using integer        = std::int64_t;
 using floating       = double; // "float" is a keyward, cannot use it here.
@@ -32,6 +37,10 @@ using floating       = double; // "float" is a keyward, cannot use it here.
 // - local_date
 // - local_time
 
+#if defined(__GNUC__) && !defined(__clang__)
+#  pragma GCC diagnostic pop
+#endif
+
 // default toml::value and default array/table. these are defined after defining
 // basic_value itself.
 // using value = basic_value<discard_comments, std::unordered_map, std::vector>;