diff --git a/package-lock.json b/package-lock.json
index 25fdb50..023fead 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "chalk": "5.5.0",
         "json-stringify-pretty-compact": "4.0.0",
         "luxon": "3.7.1",
-        "zod": "3.25.76"
+        "zod": "4.0.17"
       },
       "devDependencies": {
         "@ava/typescript": "6.0.0",
@@ -14268,9 +14268,9 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.76",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "version": "4.0.17",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.0.17.tgz",
+      "integrity": "sha512-1PHjlYRevNxxdy2JZ8JcNAw7rX8V9P1AKkP+x/xZfxB0K5FYfuV+Ug6P/6NVSR2jHQ+FzDDoDHS04nYUsOIyLQ==",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
@@ -24080,9 +24080,9 @@
       "dev": true
     },
     "zod": {
-      "version": "3.25.76",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ=="
+      "version": "4.0.17",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.0.17.tgz",
+      "integrity": "sha512-1PHjlYRevNxxdy2JZ8JcNAw7rX8V9P1AKkP+x/xZfxB0K5FYfuV+Ug6P/6NVSR2jHQ+FzDDoDHS04nYUsOIyLQ=="
     }
   }
 }
diff --git a/package.json b/package.json
index c0f0da3..8ccdae4 100644
--- a/package.json
+++ b/package.json
@@ -197,7 +197,7 @@
     "chalk": "5.5.0",
     "json-stringify-pretty-compact": "4.0.0",
     "luxon": "3.7.1",
-    "zod": "3.25.76"
+    "zod": "4.0.17"
   },
   "devDependencies": {
     "@ava/typescript": "6.0.0",