diff --git a/package-lock.json b/package-lock.json
index 811511c..9fe99c1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
         "image-size": "^2.0.2",
         "tlds": "^1.255.0",
         "twitter-api-v2": "^1.20.2",
-        "zod": "^3.24.2"
+        "zod": "^4.0.0"
       },
       "bin": {
         "crosspost": "dist/bin.js"
@@ -5167,9 +5167,9 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.76",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "version": "4.3.6",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
+      "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
diff --git a/package.json b/package.json
index e434932..181ce11 100644
--- a/package.json
+++ b/package.json
@@ -100,6 +100,6 @@
     "image-size": "^2.0.2",
     "tlds": "^1.255.0",
     "twitter-api-v2": "^1.20.2",
-    "zod": "^3.24.2"
+    "zod": "^4.0.0"
   }
 }