diff --git a/package.json b/package.json
index c2357cc..d098572 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,10 @@
   "license": "ISC",
   "readmeFilename": "README.md",
   "main": "src/index.js",
-  "files": "src",
+  "files": [
+    "src",
+    "!*.test.js"
+  ],
   "type": "module",
   "engines": {
     "node": ">=12"