diff --git a/pkg/dart2js_tools/pubspec.yaml b/pkg/dart2js_tools/pubspec.yaml
index 889e6f44bc4..87290a60a01 100644
--- a/pkg/dart2js_tools/pubspec.yaml
+++ b/pkg/dart2js_tools/pubspec.yaml
@@ -1,5 +1,5 @@
 name: dart2js_tools
-version: 0.0.1
+publish_to: none
 description: >
   Collection of tools used with dart2js including analyzing compilation
   information, deobfuscation of stack-traces and minified names.