diff --git a/package.json b/package.json
index 6a890542..99b27ac6 100644
--- a/package.json
+++ b/package.json
@@ -124,6 +124,7 @@
     "terser": "^4.8.1",
     "trim": "^0.0.3",
     "websocket-extensions": "^0.1.4",
-    "y18n": "^5.0.5"
+    "y18n": "^5.0.5",
+    "dompurify": "2.4.2"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 834efb35..9039e2d7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6362,10 +6362,10 @@ domhandler@^5.0.2, domhandler@^5.0.3:
   dependencies:
     domelementtype "^2.3.0"
 
-dompurify@2.3.5:
-  version "2.3.5"
-  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.3.5.tgz#c83ed5a3ae5ce23e52efe654ea052ffb358dd7e3"
-  integrity sha512-kD+f8qEaa42+mjdOpKeztu9Mfx5bv9gVLO6K9jRx4uGvh6Wv06Srn4jr1wPNY2OOUGGSKHNFN+A8MA3v0E0QAQ==
+dompurify@2.3.5, dompurify@2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.4.2.tgz#c3409b49357804c9b00e1fbebea81f26514c5bc3"
+  integrity sha512-ckbbxcGpfTJ7SNHC2yT2pHSCYxo2oQgSfdoDHQANzMzQyGzVmalF9W/B+X97Cdik5xFwWtwJP232gIP2+1kNEA==
 
 domutils@1.5.1:
   version "1.5.1"