diff --git a/CHANGELOG.md b/CHANGELOG.md
index abcf5a7..85a7575 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [5.21.0](https://github.com/cheminfo/openchemlib-utils/compare/v5.20.0...v5.21.0) (2024-05-22)
+
+
+### Features
+
+* add option allowEmptyMolecule in MoleculesDB ([3739662](https://github.com/cheminfo/openchemlib-utils/commit/37396627573c6744fc86a23fd6529bbd302b8031))
+
 ## [5.20.0](https://github.com/cheminfo/openchemlib-utils/compare/v5.19.1...v5.20.0) (2024-05-21)
 
 
diff --git a/package.json b/package.json
index fa16927..9b5f321 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openchemlib-utils",
-  "version": "5.20.0",
+  "version": "5.21.0",
   "description": "Various utilities that extends openchemlib-js like HOSE codes or diastereotopic IDs",
   "main": "./lib/index.js",
   "module": "./lib-esm/index.js",