diff --git a/CHANGELOG.md b/CHANGELOG.md
index a306f99f..658141b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ ml).
 
 ## testing
 - [added] #312 Placeholder: new, edit, update. (manually and with excel).
+- [added] #316 Placeholder: binding/unbinding. (manually).
 - [fixed] #313 Bump numpy from 1.21.6 to 1.22.0.
 - [fixed] #314 bugs create placeholder from lot.
 - [fixed] #317 bugs about exports placeholders.