diff --git a/lerna.json b/lerna.json
index 1b949275..86e6d24d 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.1.0",
+  "version": "4.0.0",
   "npmClient": "npm",
   "command": {
     "publish": {
diff --git a/packages/browser/package.json b/packages/browser/package.json
index 3fcac2aa..ebe56b37 100644
--- a/packages/browser/package.json
+++ b/packages/browser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@simplewebauthn/browser",
-  "version": "3.1.0",
+  "version": "4.0.0",
   "description": "SimpleWebAuthn for Browsers",
   "main": "dist/bundle/index.js",
   "unpkg": "dist/bundle/index.umd.min.js",
diff --git a/packages/server/package.json b/packages/server/package.json
index 1b00b8c0..64899741 100644
--- a/packages/server/package.json
+++ b/packages/server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@simplewebauthn/server",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "SimpleWebAuthn for Servers",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/packages/testing/package.json b/packages/testing/package.json
index e9af9582..3ad125bb 100644
--- a/packages/testing/package.json
+++ b/packages/testing/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@simplewebauthn/testing",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "Sample WebAuthn values for testing projects leveraging SimpleWebAuthn.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/packages/typescript-types/package.json b/packages/typescript-types/package.json
index dcbc1d70..5a48c867 100644
--- a/packages/typescript-types/package.json
+++ b/packages/typescript-types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@simplewebauthn/typescript-types",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "TypeScript types used by the @simplewebauthn series of libraries",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",