diff --git a/bun.lock b/bun.lock
index 4812e6546..0e9462409 100644
--- a/bun.lock
+++ b/bun.lock
@@ -200,6 +200,7 @@
       "peerDependencies": {
         "next": "^16.2.5",
         "react": "^19.2.6",
+        "tailwindcss": ">=4.1.17 <5",
       },
     },
   },
diff --git a/packages/ui/package.json b/packages/ui/package.json
index 51c6d3951..ecb176a0b 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -39,7 +39,8 @@
   "name": "@coss/ui",
   "peerDependencies": {
     "next": "^16.2.5",
-    "react": "^19.2.6"
+    "react": "^19.2.6",
+    "tailwindcss": ">=4.1.17 <5"
   },
   "scripts": {
     "clean": "rm -rf node_modules",