diff --git a/app/package.json b/app/package.json
index 95210ad..8783893 100644
--- a/app/package.json
+++ b/app/package.json
@@ -64,7 +64,7 @@
     "y-indexeddb": "^9.0.12",
     "y-webrtc": "^10.3.0",
     "yjs": "^13.6.15",
-    "zod": "^3.23.8"
+    "zod": "^4.0.0"
   },
   "devDependencies": {
     "@tailwindcss/vite": "^4.1.10",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 10f6726..dfc355d 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -252,8 +252,8 @@ importers:
         specifier: ^13.6.15
         version: 13.6.23
       zod:
-        specifier: ^3.23.8
-        version: 3.24.2
+        specifier: ^4.0.0
+        version: 4.1.8
     devDependencies:
       '@tailwindcss/vite':
         specifier: ^4.1.10
@@ -4531,8 +4531,8 @@ packages:
     resolution: {integrity: sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==}
     engines: {node: '>=10'}
 
-  zod@3.24.2:
-    resolution: {integrity: sha512-lY7CDW43ECgW9u1TcT3IoXHflywfVqDYze4waEz812jR/bZ8FHDsl7pFQoSZTz5N+2NqRXs8GBwnAwo3ZNxqhQ==}
+  zod@4.1.8:
+    resolution: {integrity: sha512-5R1P+WwQqmmMIEACyzSvo4JXHY5WiAFHRMg+zBZKgKS+Q1viRa0C1hmUKtHltoIFKtIdki3pRxkmpP74jnNYHQ==}
 
 snapshots:
 
@@ -9255,4 +9255,4 @@ snapshots:
 
   yocto-queue@0.1.0: {}
 
-  zod@3.24.2: {}
+  zod@4.1.8: {}