diff --git a/package.json b/package.json
index 311f9f3..c3b9e3d 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "@babel/plugin-transform-destructuring": "^7.9.5",
     "@babel/preset-env": "^7.9.6",
     "@rollup/plugin-babel": "^5.0.0",
-    "eslint": "^5.16.0",
+    "eslint": "^7.0.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-plugin-import": "^2.20.2",
     "eslint-plugin-node": "^9.2.0",
@@ -20,10 +20,8 @@
     "jsdoc": "^3.6.4",
     "minami": "^1.1.1",
     "mocha": "^6.2.3",
-    "nyc": "^14.1.1",
+    "nyc": "^15.0.1",
     "rollup": "^2.9.0",
-    "rollup-plugin-babel": "^4.4.0",
-    "uglify-js": "^2.7.3",
     "watch": "^1.0.2"
   },
   "directories": {
diff --git a/postinstall.js b/postinstall.js
new file mode 100644
index 0000000..5e60fc2
--- /dev/null
+++ b/postinstall.js
@@ -0,0 +1 @@
+console.log('\x1b[36m%s\x1b[0m', "Please give  MidiWriterJS a ⭐ on GitHub if you found useful, thx!");
\ No newline at end of file