diff --git a/changelog.md b/changelog.md
index 53d2ada..274cee7 100644
--- a/changelog.md
+++ b/changelog.md
@@ -10,7 +10,13 @@ Since [Plotly.js](https://plotly.com/javascript/) is the main dependency of this
 application, major version changes in Plotly.js will also trigger a major
 version change in this application.
 
-## Version 2.2.1-pre (2023-01-10)
+## Version 2.2.1 (2023-01-10)
+
+* __[maintenance]__
+Update dependency `punycode` to 2.2.0.
+
+* __[maintenance]__
+Update dependency `ws` to 8.12.0.
 
 * __[maintenance]__
 Update dependency `jsdom` to 21.0.0.
diff --git a/export-server/package-lock.json b/export-server/package-lock.json
index 8ed92ea..9563b89 100644
--- a/export-server/package-lock.json
+++ b/export-server/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "plotly-node-export-server",
-  "version": "2.2.1-pre",
+  "version": "2.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -299,9 +299,9 @@
       "integrity": "sha512-E/ZsdU4HLs/68gYzgGTkMicWTLPdAftJLfJFlLUAAKZGkStNU72sZjT66SnMDVOfOWY/YAoiD7Jxa9iHvngcag=="
     },
     "punycode": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.2.0.tgz",
+      "integrity": "sha512-LN6QV1IJ9ZhxWTNdktaPClrNfp8xdSAYS0Zk2ddX7XsXZAxckMHPCBcHRo0cTcEIgYPRiGEkmji3Idkh2yFtYw=="
     },
     "querystringify": {
       "version": "2.2.0",
@@ -424,9 +424,9 @@
       "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ=="
     },
     "ws": {
-      "version": "8.11.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
-      "integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg=="
+      "version": "8.12.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.12.0.tgz",
+      "integrity": "sha512-kU62emKIdKVeEIOIKVegvqpXMSTAMLJozpHZaJNDYqBjzlSYXQGviYwN1osDLJ9av68qHd4a2oSjd7yD4pacig=="
     },
     "xml-name-validator": {
       "version": "4.0.0",
diff --git a/export-server/package.json b/export-server/package.json
index c78aa15..eaf6353 100644
--- a/export-server/package.json
+++ b/export-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "plotly-node-export-server",
-  "version": "2.2.1-pre",
+  "version": "2.2.1",
   "description": "Plotly.js Node.js export server",
   "repository": {
     "url": "https://gitlab.com/striezel/plotly-node-export-server.git",