diff --git a/package.json b/package.json
index 4ab0177..aee8c60 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "hex-and-rgba": "^1.3.5",
     "morgan": "^1.9.1",
     "pngjs-image": "^0.11.7",
-    "pug": "^2.0.4",
+    "pug": "^3.0.1",
     "qr-image": "^3.2.0",
     "random-hex-color": "^1.0.1",
     "serve-favicon": "^2.5.0"