issue: Type error when used with zod v4

[shahinghasemi]

Version Number

5.2.1

Steps to reproduce

import { z } from 'zod/v4';
import { zodResolver } from '@hookform/resolvers/zod';
import { useForm } from 'react-hook-form';


const schema = z.object({ name: z.string() });

  const methods = useForm({
    resolver: zodResolver(schema),
  });

Here's I can't use the schema inside the zodResolver, typescript complains:

No overload matches this call.
  Overload 1 of 4, '(schema: Zod3Type<{ name: string; }, { name: string; }>, schemaOptions?: ParseParams | undefined, resolverOptions?: NonRawResolverOptions | undefined): Resolver<...>', gave the following error.
    Argument of type 'ZodObject<{ name: ZodString; }, $strip>' is not assignable to parameter of type 'Zod3Type<{ name: string; }, { name: string; }>'.
      Types of property '_def' are incompatible.
        Property 'typeName' is missing in type '$ZodObjectDef<{ name: ZodString; }>' but required in type '{ typeName: string; }'.
 Overload 2 of 4, '(schema: $ZodType<unknown, FieldValues, $ZodTypeInternals<unknown, FieldValues>>, schemaOptions?: ParseContext<$ZodIssue> | undefined, resolverOptions?: NonRawResolverOptions | undefined): Resolver<...>', gave the following error.
    Argument of type 'ZodObject<{ name: ZodString; }, $strip>' is not assignable to parameter of type '$ZodType<unknown, FieldValues, $ZodTypeInternals<unknown, FieldValues>>'.
      The types of '_zod.version.minor' are incompatible between these types.
        Type '1' is not assignable to type '0'.ts(2769)

Heres my package.json:

"@hookform/resolvers": "^5.2.1",
"react-hook-form": "^7.62.0",
"typescript": "^5.9.2"

[EWisselink]

Try to downgrade to 5.2.0, if that works it is related to #803

[shahinghasemi]

@EWisselink I downgraded to 5.2.0 and it didn't work. Typescript throws the same type error.

[EWisselink]

Maybe best to try to create a small reproduction of this? I just tried your example with the same versions of packages listed and got no TS errors.
https://codesandbox.io/p/devbox/modest-tristan-mr3mvs

[bennajah]

same issue here with

{
  "dependencies": {
    "@hookform/resolvers": "^5.2.1",
    "react-hook-form": "^7.62.0",
    "zod": "^4.1.5"
  },
  "devDependencies": {
    "typescript": "^5.9.2",
  }
}

[marcpicaud]

Had the same issue with

{
  "dependencies": {
    "@hookform/resolvers": "5.2.1",
    "react-hook-form": "7.62.0",
    "zod": "4.1.5"
  },
  "devDependencies": {
    "typescript": "5.8.3",
  }
}

--> Downgrading to 5.2.0 removed the issue.

[bennajah]

Had the same issue with

{
  "dependencies": {
    "@hookform/resolvers": "5.2.1",
    "react-hook-form": "7.62.0",
    "zod": "4.1.5"
  },
  "devDependencies": {
    "typescript": "5.8.3",
  }
}

--> Downgrading to 5.2.0 removed the issue.

Downgrade not resolve the issue for me
I'm using zod 4 and zod mini

import { z } from "zod";
// or
import { z } from "zod/mini";