diff --git a/docs/devlog.md b/docs/devlog.md
index bdaef89a..53ed0821 100644
--- a/docs/devlog.md
+++ b/docs/devlog.md
@@ -1,3 +1,7 @@
+## 2023-10-21
+
+тестируем substituter
+
 ## 2023-10-12
 
 ...