diff --git a/core/cli/package.json b/core/cli/package.json
index b09a69e1e..562f12caa 100644
--- a/core/cli/package.json
+++ b/core/cli/package.json
@@ -47,7 +47,7 @@
     "pretty-format": "^29.7.0",
     "tslib": "^2.8.1",
     "yaml": "^2.8.0",
-    "zod-validation-error": "^3.4.1"
+    "zod-validation-error": "^4.0.1"
   },
   "engines": {
     "node": "18.x || 20.x || 22.x"
diff --git a/package-lock.json b/package-lock.json
index a1b32bd1f..808d7a075 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -65,7 +65,7 @@
         "pretty-format": "^29.7.0",
         "tslib": "^2.8.1",
         "yaml": "^2.8.0",
-        "zod-validation-error": "^3.4.1"
+        "zod-validation-error": "^4.0.1"
       },
       "bin": {
         "dotcom-tool-kit": "bin/run"
@@ -210,6 +210,7 @@
     },
     "core/sandbox": {
       "version": "1.0.0",
+      "extraneous": true,
       "license": "ISC",
       "dependencies": {
         "@dotcom-tool-kit/circleci": "^7.6.6",
@@ -28389,10 +28390,6 @@
       "version": "2.1.2",
       "license": "MIT"
     },
-    "node_modules/sandbox": {
-      "resolved": "core/sandbox",
-      "link": true
-    },
     "node_modules/sax": {
       "version": "1.2.1",
       "license": "ISC",
@@ -32322,13 +32319,15 @@
       }
     },
     "node_modules/zod-validation-error": {
-      "version": "3.5.2",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/zod-validation-error/-/zod-validation-error-4.0.1.tgz",
+      "integrity": "sha512-F3rdaCOHs5ViJ5YTz5zzRtfkQdMdIeKudJAoxy7yB/2ZMEHw73lmCAcQw11r7++20MyGl4WV59EVh7A9rNAyog==",
       "license": "MIT",
       "engines": {
         "node": ">=18.0.0"
       },
       "peerDependencies": {
-        "zod": "^3.25.0"
+        "zod": "^3.25.0 || ^4.0.0"
       }
     },
     "node_modules/zod2md": {