diff --git a/packages/tsup-config/package.json b/packages/tsup-config/package.json
index 29bb1f7..fcdbc0f 100644
--- a/packages/tsup-config/package.json
+++ b/packages/tsup-config/package.json
@@ -30,7 +30,7 @@
   },
   "dependencies": {
     "postcss": "^8.4.21",
-    "postcss-modules": "^4.3.1",
+    "postcss-modules": "^6.0.0",
     "postcss-nested": "^6.0.1"
   }
 }