diff --git a/package.json b/package.json
index fe5fd37..35d6b4c 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@11ty/eleventy": "^2.0.1",
     "@node-minify/core": "^8.0.6",
-    "@node-minify/crass": "^8.0.6",
+    "@node-minify/crass": "^9.0.1",
     "@node-minify/html-minifier": "^8.0.6",
     "@sardine/eleventy-plugin-tinyhtml": "^0.2.0",
     "eleventy-plugin-rev": "^2.0.0",