diff --git a/netlify.toml b/netlify.toml
index d3abbe3..e1642ad 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -6,7 +6,7 @@
 [functions]
   directory = "functions"
   node_bundler = "esbuild"
-  external_node_modules = ["mdsvex", "heffnerdotdev", "@resvg/resvg-js"]
+  external_node_modules = ["mdsvex", "heffnerdotdev", "@resvg/resvg-js", "remark-html"]
 
 [build.environment]
   NODE_VERSION = "16"