diff --git a/.changeset/bob-the-bundler-416-dependencies.md b/.changeset/bob-the-bundler-416-dependencies.md
new file mode 100644
index 00000000..b9039f08
--- /dev/null
+++ b/.changeset/bob-the-bundler-416-dependencies.md
@@ -0,0 +1,5 @@
+---
+"bob-the-bundler": patch
+---
+dependencies updates:
+  - Updated dependency [`zod@^4.0.0` ↗︎](https://www.npmjs.com/package/zod/v/4.0.0) (from `^3.20.2`, in `dependencies`)
diff --git a/package.json b/package.json
index 25592ef5..059e030b 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "resolve.exports": "^2.0.0",
     "tslib": "^2.0.0",
     "yargs": "^18.0.0",
-    "zod": "^3.20.2"
+    "zod": "^4.0.0"
   },
   "devDependencies": {
     "@changesets/changelog-github": "0.5.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 581ecf42..e28cc32a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -42,8 +42,8 @@ importers:
         specifier: ^18.0.0
         version: 18.0.0
       zod:
-        specifier: ^3.20.2
-        version: 3.25.50
+        specifier: ^4.0.0
+        version: 4.0.0
     devDependencies:
       '@changesets/changelog-github':
         specifier: 0.5.1
@@ -2327,8 +2327,8 @@ packages:
     resolution: {integrity: sha512-GQHQqAopRhwU8Kt1DDM8NjibDXHC8eoh1erhGAJPEyveY9qqVeXvVikNKrDz69sHowPMorbPUrH/mx8c50eiBQ==}
     engines: {node: '>=18'}
 
-  zod@3.25.50:
-    resolution: {integrity: sha512-VstOnRxf4tlSq0raIwbn0n+LA34SxVoZ8r3pkwSUM0jqNiA/HCMQEVjTuS5FZmHsge+9MDGTiAuHyml5T0um6A==}
+  zod@4.0.0:
+    resolution: {integrity: sha512-9diLdTPc/L7w/5jI4C3gHYNiGHDV9IZYxo1e5LSD8cabi65WVTWWb+g2BGPEpUUCOxR4D+6O5B0AzyMdUAXwrw==}
 
 snapshots:
 
@@ -4760,4 +4760,4 @@ snapshots:
 
   yoctocolors@2.1.1: {}
 
-  zod@3.25.50: {}
+  zod@4.0.0: {}