diff --git a/package.json b/package.json
index ffe9c8f1..31d6a49b 100644
--- a/package.json
+++ b/package.json
@@ -110,7 +110,7 @@
     "typescript": "5.9.2",
     "unified": "11.0.5",
     "vnu-jar": "24.10.17",
-    "zod": "3.25.76",
+    "zod": "4.0.15",
     "zod-validation-error": "3.5.3"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0ab77c9f..807c0b31 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -267,11 +267,11 @@ importers:
         specifier: 24.10.17
         version: 24.10.17
       zod:
-        specifier: 3.25.76
-        version: 3.25.76
+        specifier: 4.0.15
+        version: 4.0.15
       zod-validation-error:
         specifier: 3.5.3
-        version: 3.5.3(zod@3.25.76)
+        version: 3.5.3(zod@4.0.15)
 
 packages:
 
@@ -4661,8 +4661,8 @@ packages:
     peerDependencies:
       zod: ^3.25.0 || ^4.0.0
 
-  zod@3.25.76:
-    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+  zod@4.0.15:
+    resolution: {integrity: sha512-2IVHb9h4Mt6+UXkyMs0XbfICUh1eUrlJJAOupBHUhLRnKkruawyDddYRCs0Eizt900ntIMk9/4RksYl+FgSpcQ==}
 
   zwitch@2.0.4:
     resolution: {integrity: sha512-bXE4cR/kVZhKZX/RjPEflHaKVhUVl85noU3v6b8apfQEc1x4A+zBxjZ4lN8LqGd6WZ3dl98pY4o717VFmoPp+A==}
@@ -10098,10 +10098,10 @@ snapshots:
       y18n: 5.0.8
       yargs-parser: 21.1.1
 
-  zod-validation-error@3.5.3(zod@3.25.76):
+  zod-validation-error@3.5.3(zod@4.0.15):
     dependencies:
-      zod: 3.25.76
+      zod: 4.0.15
 
-  zod@3.25.76: {}
+  zod@4.0.15: {}
 
   zwitch@2.0.4: {}