diff --git a/packages/classic-test-app/lib/my-engine/package.json b/packages/classic-test-app/lib/my-engine/package.json
index 37da46e1b..8a42d9338 100644
--- a/packages/classic-test-app/lib/my-engine/package.json
+++ b/packages/classic-test-app/lib/my-engine/package.json
@@ -1,5 +1,6 @@
 {
   "name": "my-engine",
+  "private": true,
   "version": "0.0.1",
   "keywords": [
     "ember-addon",
diff --git a/packages/docs/package.json b/packages/docs/package.json
index 1238b140c..64b25b530 100644
--- a/packages/docs/package.json
+++ b/packages/docs/package.json
@@ -1,5 +1,6 @@
 {
   "name": "docs",
+  "private": true,
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
diff --git a/packages/test-app/lib/my-engine/package.json b/packages/test-app/lib/my-engine/package.json
index 37da46e1b..8a42d9338 100644
--- a/packages/test-app/lib/my-engine/package.json
+++ b/packages/test-app/lib/my-engine/package.json
@@ -1,5 +1,6 @@
 {
   "name": "my-engine",
+  "private": true,
   "version": "0.0.1",
   "keywords": [
     "ember-addon",