diff --git a/changelog.md b/changelog.md
index db0d5b6..e048a3a 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.21.5](https://github.com/ehmpathy/domain-objects/compare/v0.21.4...v0.21.5) (2024-06-18)
+
+
+### Bug Fixes
+
+* **dedupe:** improve dedupe operation cost from O(n^2) to O(n) ([87faa66](https://github.com/ehmpathy/domain-objects/commit/87faa663ebefba97432c3bd39b4fd227429c0f82))
+
 ## [0.21.4](https://github.com/ehmpathy/domain-objects/compare/v0.21.3...v0.21.4) (2024-06-18)
 
 
diff --git a/package-lock.json b/package-lock.json
index 0a3f789..114cca1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "domain-objects",
-  "version": "0.21.4",
+  "version": "0.21.5",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "domain-objects",
-      "version": "0.21.4",
+      "version": "0.21.5",
       "hasInstallScript": true,
       "dependencies": {
         "@ehmpathy/error-fns": "^1.1.0",
diff --git a/package.json b/package.json
index 1074fbb..fd5ef97 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "domain-objects",
   "author": "ehmpathy",
   "description": "A simple, convenient way to represent domain objects, leverage domain knowledge, and add runtime validation in your code base.",
-  "version": "0.21.4",
+  "version": "0.21.5",
   "repository": "ehmpathy/domain-objects",
   "homepage": "https://github.com/ehmpathy/domain-objects",
   "keywords": [