diff --git a/package-lock.json b/package-lock.json
index 19a8553..00df2db 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13983,9 +13983,9 @@
       }
     },
     "preact-render-to-string": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-4.1.0.tgz",
-      "integrity": "sha512-FlFBJRxo8z4cp6VsDmeYjIEx4ZK2clFJnKIvIj8K1IQCRm7ZgJ/SZ1+BotT86/Nc+V1pNtFabHoUi6gpjx5Pug==",
+      "version": "5.0.6",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.0.6.tgz",
+      "integrity": "sha512-VOsbY/YNPJVIxEdzkUJNwhZNEOE5/w4lbEAsBvhsImbpeDsDhCtUvzpZav/j8tHF8HcG6lNWljmkmXfy+KEnsQ==",
       "dev": true,
       "requires": {
         "pretty-format": "^3.8.0"
diff --git a/package.json b/package.json
index 9909410..d784989 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "node-sass": "^4.10.0",
     "preact-cli": "^2.2.1",
     "preact-render-spy": "^1.3.0",
-    "preact-render-to-string": "^4.1.0",
+    "preact-render-to-string": "^5.0.6",
     "preact-widget-scripts": "^0.6.0",
     "sass-loader": "^7.1.0"
   },