diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index c6236b53f..69bec6b5a 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,12 +1,12 @@
 {
   "name": "@automattic/vip",
-  "version": "3.9.0",
+  "version": "3.9.1-dev.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@automattic/vip",
-      "version": "3.9.0",
+      "version": "3.9.1-dev.0",
       "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 941545bde..f61c3361a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@automattic/vip",
-  "version": "3.9.0",
+  "version": "3.9.1-dev.0",
   "description": "The VIP Javascript library & CLI",
   "main": "index.js",
   "bin": {