diff --git a/package-lock.json b/package-lock.json
index c5d480a..1294a35 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -42,7 +42,7 @@
         "prettier": "^2.2.1"
       },
       "engines": {
-        "node": ">=4.x",
+        "node": ">=v4.9.1",
         "npm": ">=5.x"
       },
       "peerDependencies": {
diff --git a/package.json b/package.json
index 963b813..0a91d07 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,7 @@
     "flow-bin": ">=0.93.0"
   },
   "engines": {
-    "node": ">=4.x",
+    "node": ">=v4.9.1",
     "npm": ">=5.x"
   },
   "babel": {