diff --git a/package-lock.json b/package-lock.json
index e077140e..a6e037cd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "manifesto.js",
-  "version": "4.2.20",
+  "version": "4.2.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "manifesto.js",
-      "version": "4.2.20",
+      "version": "4.2.21",
       "license": "MIT",
       "dependencies": {
         "@edsilv/http-status-codes": "^1.0.3",
diff --git a/package.json b/package.json
index 28d67695..a8c2604b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "manifesto.js",
-  "version": "4.2.20",
+  "version": "4.2.21",
   "description": "IIIF Presentation API utility library for client and server",
   "main": "./dist-commonjs/index.js",
   "module": "./dist-esmodule/index.js",