diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6e229ba..d446bd2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ for new features.
 
 - Stopped putting built files together in gha.
   - Because some people did not work in some environments
+- If the objective function contains null for 10 consecutive times, optimization is stopped.
 
 ### Deprecated