diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..3a6f2e9
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+v15.9.0
diff --git a/package.json b/package.json
index cdee759..3e30d6c 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,9 @@
   "dependencies": {
     "aoe_technology_radar": "https://github.com/aoepeople/aoe_technology_radar.git"
   },
+  "engines": {
+    "node": "~15.9"
+  },
   "browserslist": {
     "production": [
       ">0.2%",