diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e49bbe8..a4d820a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -6,6 +6,8 @@ settings:
 
 overrides:
   wxt>vite: 8.1.3
+  '@ai-sdk/provider-utils@2.2.8>zod': ^3.23.8 || ^4
+  '@ai-sdk/ui-utils@1.2.11>zod': ^3.23.8 || ^4
 
 importers:
 
@@ -145,7 +147,7 @@ packages:
     resolution: {integrity: sha512-fqhG+4sCVv8x7nFzYnFo19ryhAa3w096Kmc3hWxMQfW/TubPOmt3A6tYZhl4mUfQWWQMsuSkLrtjlWuXBVSGQA==}
     engines: {node: '>=18'}
     peerDependencies:
-      zod: ^3.23.8
+      zod: ^3.23.8 || ^4
 
   '@ai-sdk/provider-utils@3.0.25':
     resolution: {integrity: sha512-CvsRu+32Y8a167s+lrIBtsybvgTHp8j9y+6BeTvLeoW3Q+okw/b4CnNUFOLIXsRaKHQKAH+IHNJPYWywfpw0LA==}
@@ -185,7 +187,7 @@ packages:
     resolution: {integrity: sha512-3zcwCc8ezzFlwp3ZD15wAPjf2Au4s3vAbKsXQVyhxODHcmu0iyPO2Eua6D/vicq/AUm/BAo60r97O6HU+EI0+w==}
     engines: {node: '>=18'}
     peerDependencies:
-      zod: ^3.23.8
+      zod: ^3.23.8 || ^4
 
   '@aklinker1/rollup-plugin-visualizer@5.12.0':
     resolution: {integrity: sha512-X24LvEGw6UFmy0lpGJDmXsMyBD58XmX1bbwsaMLhNoM+UMQfQ3b2RtC+nz4b/NoRK5r6QJSKJHBNVeUdwqybaQ==}
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
index 3dfd9b5..7e91095 100644
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@@ -45,6 +45,10 @@ allowBuilds:
 # WXT's vite to 8.1.3 (already vetted by the quarantine for @wxt-dev/module-react).
 overrides:
   wxt>vite: 8.1.3
+  # @mastra/core 1.50.x aliases these legacy AI SDK packages while accepting
+  # Zod 4; widen only the resolved versions' stale Zod 3-only peer ranges.
+  "@ai-sdk/provider-utils@2.2.8>zod": "^3.23.8 || ^4"
+  "@ai-sdk/ui-utils@1.2.11>zod": "^3.23.8 || ^4"
 
 # Declared peer compatibility for upstream ranges that lag what we install;
 # each is verified working by this repo's own suites, so the install-time
@@ -55,6 +59,3 @@ peerDependencyRules:
     # workers-types ^4; v5 is the same auto-generated surface, newer date.
     "partyserver>@cloudflare/workers-types": "5"
     "wrangler>@cloudflare/workers-types": "5"
-    # agents' legacy ai-sdk v4-era deps peer zod ^3; the workspace is zod 4.
-    "@ai-sdk/provider-utils>zod": "4"
-    "@ai-sdk/ui-utils>zod": "4"