diff --git a/tl/optional.hpp b/tl/optional.hpp
index 7350f8a..395c58a 100644
--- a/tl/optional.hpp
+++ b/tl/optional.hpp
@@ -1,7 +1,7 @@
 
 ///
 // optional - An implementation of std::optional with extensions
-// Written in 2017 by Simon Brand (@TartanLlama)
+// Written in 2017 by Simon Brand (tartanllama@gmail.com, @TartanLlama)
 //
 // To the extent possible under law, the author(s) have dedicated all
 // copyright and related and neighboring rights to this software to the