diff --git a/CHANGELOG.md b/CHANGELOG.md
index c7ff83000a3b6d81f3554c2696fbefb6476bf5aa..a91b88cff3a633b64c0943d528675a16b051936a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@ API-breaking change is listed.
 
 ## std++ master
 
-## std++ 1.6.0
+## std++ 1.6.0 (2021-11-05)
 
 Coq 8.14 is newly supported by this release, and Coq 8.10 to 8.13 remain
 supported.