diff --git a/package.json b/package.json
index 414169b06f..1d79b7f52a 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,14 @@
   "_dependenciesComments": {
     "parse5": "Pinned to exact version number because we monkeypatch its internals (see htmltodom.js)"
   },
+  "peerDependencies": {
+    "canvas": "^2.5.0"
+  },
+  "peerDependenciesMeta": {
+    "canvas": {
+      "optional": true
+    }
+  },
   "devDependencies": {
     "benchmark": "1.0.0",
     "browserify": "^16.2.3",