diff --git a/biome.json b/biome.json
index 295b124d4..3b1f168ab 100644
--- a/biome.json
+++ b/biome.json
@@ -56,7 +56,13 @@
         "noImplicitAnyLet": "warn",
         "noAssignInExpressions": "warn",
         "noArrayIndexKey": "off",
-        "useIterableCallbackReturn": "warn"
+        "useIterableCallbackReturn": "warn",
+        "noUnknownAtRules": {
+          "level": "error",
+          "options": {
+            "ignore": ["tailwind", "apply", "screen"]
+          }
+        }
       },
       "style": {
         "noNonNullAssertion": "warn",