diff --git a/manifest.json b/manifest.json
index ec9b15c472..7f5584831a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,4 @@
 {
-  "manifest_version": 2,
-
   "name": "Solidity",
   "description": "Realtime compiler and runtime",
   "devtools_page": "devtools.html",