diff --git a/__tests__/__fixtures__/package.json b/__tests__/__fixtures__/package.json
index e2e70ee..0b9c8a2 100644
--- a/__tests__/__fixtures__/package.json
+++ b/__tests__/__fixtures__/package.json
@@ -1,5 +1,6 @@
 {
   "name": "csstype-fixtures",
+  "private": true,
   "dependencies": {
     "csstype": "^2.6.16"
   }
diff --git a/__tests__/package.json b/__tests__/package.json
index bbec45e..a5d5d2d 100644
--- a/__tests__/package.json
+++ b/__tests__/package.json
@@ -1,5 +1,6 @@
 {
   "name": "csstype-test",
+  "private": true,
   "dependencies": {
     "typescript3.5": "npm:typescript@~3.5.3",
     "typescript3.6": "npm:typescript@~3.6.5",