diff --git a/apps/web/package.json b/apps/web/package.json
index 713f9fdb9..eaebf10e3 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -53,7 +53,7 @@
     "tw-animate-css": "^1.4.0",
     "unist-util-visit": "^5.0.0",
     "usehooks-ts": "^3.1.1",
-    "zod": "^3.24.2"
+    "zod": "^4.0.0"
   },
   "devDependencies": {
     "@ai-sdk/openai": "^3.0.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index b5593aa0f..c90cb367f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -64,7 +64,7 @@ importers:
         version: 1.2.15(@types/react-dom@19.2.3(@types/react@19.2.7))(@types/react@19.2.7)(react-dom@19.2.3(react@19.2.3))(react@19.2.3)
       '@t3-oss/env-nextjs':
         specifier: ^0.13.0
-        version: 0.13.10(typescript@5.9.3)(zod@3.25.76)
+        version: 0.13.10(typescript@5.9.3)(zod@4.3.5)
       '@types/mdx':
         specifier: ^2.0.13
         version: 2.0.13
@@ -141,12 +141,12 @@ importers:
         specifier: ^3.1.1
         version: 3.1.1(react@19.2.3)
       zod:
-        specifier: ^3.24.2
-        version: 3.25.76
+        specifier: ^4.0.0
+        version: 4.3.5
     devDependencies:
       '@ai-sdk/openai':
         specifier: ^3.0.2
-        version: 3.0.2(zod@3.25.76)
+        version: 3.0.2(zod@4.3.5)
       '@tailwindcss/postcss':
         specifier: ^4.1.18
         version: 4.1.18
@@ -164,7 +164,7 @@ importers:
         version: 19.2.3(@types/react@19.2.7)
       ai:
         specifier: ^6.0.3
-        version: 6.0.5(zod@3.25.76)
+        version: 6.0.5(zod@4.3.5)
       dotenv-flow:
         specifier: ^4.1.0
         version: 4.1.0
@@ -3369,33 +3369,33 @@ packages:
   yoga-layout@3.2.1:
     resolution: {integrity: sha512-0LPOt3AxKqMdFBZA3HBAt/t/8vIKq7VaQYbuA8WxCgung+p9TVyKRYdpvCb80HcdTN2NkbIKbhNwKUfm3tQywQ==}
 
-  zod@3.25.76:
-    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+  zod@4.3.5:
+    resolution: {integrity: sha512-k7Nwx6vuWx1IJ9Bjuf4Zt1PEllcwe7cls3VNzm4CQ1/hgtFUK2bRNG3rvnpPUhFjmqJKAKtjV576KnUkHocg/g==}
 
   zwitch@2.0.4:
     resolution: {integrity: sha512-bXE4cR/kVZhKZX/RjPEflHaKVhUVl85noU3v6b8apfQEc1x4A+zBxjZ4lN8LqGd6WZ3dl98pY4o717VFmoPp+A==}
 
 snapshots:
 
-  '@ai-sdk/gateway@3.0.4(zod@3.25.76)':
+  '@ai-sdk/gateway@3.0.4(zod@4.3.5)':
     dependencies:
       '@ai-sdk/provider': 3.0.1
-      '@ai-sdk/provider-utils': 4.0.2(zod@3.25.76)
+      '@ai-sdk/provider-utils': 4.0.2(zod@4.3.5)
       '@vercel/oidc': 3.0.5
-      zod: 3.25.76
+      zod: 4.3.5
 
-  '@ai-sdk/openai@3.0.2(zod@3.25.76)':
+  '@ai-sdk/openai@3.0.2(zod@4.3.5)':
     dependencies:
       '@ai-sdk/provider': 3.0.1
-      '@ai-sdk/provider-utils': 4.0.2(zod@3.25.76)
-      zod: 3.25.76
+      '@ai-sdk/provider-utils': 4.0.2(zod@4.3.5)
+      zod: 4.3.5
 
-  '@ai-sdk/provider-utils@4.0.2(zod@3.25.76)':
+  '@ai-sdk/provider-utils@4.0.2(zod@4.3.5)':
     dependencies:
       '@ai-sdk/provider': 3.0.1
       '@standard-schema/spec': 1.1.0
       eventsource-parser: 3.0.6
-      zod: 3.25.76
+      zod: 4.3.5
 
   '@ai-sdk/provider@3.0.1':
     dependencies:
@@ -4546,17 +4546,17 @@ snapshots:
     dependencies:
       tslib: 2.8.1
 
-  '@t3-oss/env-core@0.13.10(typescript@5.9.3)(zod@3.25.76)':
+  '@t3-oss/env-core@0.13.10(typescript@5.9.3)(zod@4.3.5)':
     optionalDependencies:
       typescript: 5.9.3
-      zod: 3.25.76
+      zod: 4.3.5
 
-  '@t3-oss/env-nextjs@0.13.10(typescript@5.9.3)(zod@3.25.76)':
+  '@t3-oss/env-nextjs@0.13.10(typescript@5.9.3)(zod@4.3.5)':
     dependencies:
-      '@t3-oss/env-core': 0.13.10(typescript@5.9.3)(zod@3.25.76)
+      '@t3-oss/env-core': 0.13.10(typescript@5.9.3)(zod@4.3.5)
     optionalDependencies:
       typescript: 5.9.3
-      zod: 3.25.76
+      zod: 4.3.5
 
   '@tailwindcss/node@4.1.18':
     dependencies:
@@ -4724,13 +4724,13 @@ snapshots:
 
   acorn@8.15.0: {}
 
-  ai@6.0.5(zod@3.25.76):
+  ai@6.0.5(zod@4.3.5):
     dependencies:
-      '@ai-sdk/gateway': 3.0.4(zod@3.25.76)
+      '@ai-sdk/gateway': 3.0.4(zod@4.3.5)
       '@ai-sdk/provider': 3.0.1
-      '@ai-sdk/provider-utils': 4.0.2(zod@3.25.76)
+      '@ai-sdk/provider-utils': 4.0.2(zod@4.3.5)
       '@opentelemetry/api': 1.9.0
-      zod: 3.25.76
+      zod: 4.3.5
 
   ansi-colors@4.1.3: {}
 
@@ -6574,6 +6574,6 @@ snapshots:
 
   yoga-layout@3.2.1: {}
 
-  zod@3.25.76: {}
+  zod@4.3.5: {}
 
   zwitch@2.0.4: {}