diff --git a/package.json b/package.json
index f2753794c..b1f281b88 100644
--- a/package.json
+++ b/package.json
@@ -115,7 +115,9 @@
         "ts-jest": "^26.4.4",
         "typescript": "^4.0.5"
     },
-    "dependencies": {},
+    "dependencies": {
+        "@webcomponents/webcomponentsjs": "2.5.0"
+    },
     "keywords": [
         "math",
         "editor",
diff --git a/src/mathlive.ts b/src/mathlive.ts
index b5c6f6115..79b58160e 100644
--- a/src/mathlive.ts
+++ b/src/mathlive.ts
@@ -1,3 +1,4 @@
+import '@webcomponents/webcomponentsjs';
 import type { Mathfield } from './public/mathfield';
 import type { MathfieldOptions, TextToSpeechOptions } from './public/options';
 import type {