diff --git a/packages/miniflare/package.json b/packages/miniflare/package.json
index 7c5ea44d254f..03dea3909bba 100644
--- a/packages/miniflare/package.json
+++ b/packages/miniflare/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "miniflare",
-	"version": "3.20250214.1",
+	"version": "4.20250214.0-rc.0",
 	"description": "Fun, full-featured, fully-local simulator for Cloudflare Workers",
 	"keywords": [
 		"cloudflare",
diff --git a/packages/wrangler/package.json b/packages/wrangler/package.json
index eb1dcd4bc380..70f0607bfe8e 100644
--- a/packages/wrangler/package.json
+++ b/packages/wrangler/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "wrangler",
-	"version": "3.110.0",
+	"version": "4.0.0-rc.0",
 	"description": "Command-line interface for all things Cloudflare Workers",
 	"keywords": [
 		"wrangler",