diff --git a/packages/editor/package.json b/packages/editor/package.json
index a77ea331a6..8b054c4d38 100644
--- a/packages/editor/package.json
+++ b/packages/editor/package.json
@@ -50,6 +50,7 @@
     "@open-iframe-resizer/react": "1.2.1",
     "@serlo/katex-styles": "1.0.1",
     "@vidstack/react": "next",
+    "dompurify": "^3.2.3",
     "isomorphic-dompurify": "^2.19.0",
     "lit": "^3.2.1",
     "motion": "^11.11.17",
diff --git a/yarn.lock b/yarn.lock
index 7712aab187..763e227475 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5798,6 +5798,7 @@ __metadata:
     "@vitejs/plugin-react": ^4.3.3
     autoprefixer: ^10.4.20
     clsx: ^2.1.1
+    dompurify: ^3.2.3
     eslint: ^9.14.0
     eslint-config-next: ^15.0.3
     eslint-config-prettier: ^9.1.0