diff --git a/CHANGE_LOG b/CHANGE_LOG
index e1f3e56f..2047bb84 100644
--- a/CHANGE_LOG
+++ b/CHANGE_LOG
@@ -1,4 +1,4 @@
-2021-XX-XX   2.1.1:
+2021-06-11   2.1.1:
 -------------------
   * add type hinting (see PEP 484, 561) using stub (`.pyi`) files
   * add tests