diff --git a/package.json b/package.json
index 77e72328c..bfb70dd42 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "simple-get": "^3.0.3"
   },
   "devDependencies": {
-    "@types/node": "^10.12.18",
+    "@types/node": "^14.11.10",
     "assert-rejects": "^1.0.0",
     "dtslint": "^4.0.7",
     "express": "^4.16.3",
diff --git a/src/Canvas.cc b/src/Canvas.cc
index 0cfe750d6..179ca7c69 100644
--- a/src/Canvas.cc
+++ b/src/Canvas.cc
@@ -114,7 +114,7 @@ NAN_METHOD(Canvas::New) {
       else if (0 == strcmp("svg", *Nan::Utf8String(info[2])))
         backend = new SvgBackend(width, height);
       else
-        backend = new ImageBackend(width, height);
+        return Nan::ThrowRangeError("Unknown canvas type");
     }
     else
       backend = new ImageBackend(width, height);