diff --git a/README.md b/README.md
index 93d5c88..a5b24c4 100644
--- a/README.md
+++ b/README.md
@@ -915,7 +915,7 @@ work-around:
 
 ### 1.1.0
 
-Released 2018-??-??
+Released 2018-06-17
 
 * Add `constexpr` support for comparison operators.