DeepPartial type cannot handle 'unknown' type

[b-houghton]

Given the following example:

import { Factory } from 'fishery';

interface Entity1 {
  entity2: Entity2;
}

interface Entity2 {
  id: string;
  entity3: Array<Entity3>;
}

interface Entity3 {
  _permissions: unknown;
}

const entity2Factory = Factory.define<Entity2>(() => ({
  id: 'abc',
  entity3: [],
}));

const entity2 = entity2Factory.build();

const entity1Factory = Factory.define<Entity1>(() => ({
  entity2: entity2Factory.build(),
}));

const entity1 = entity1Factory.build({
  entity2: entity2,
});

I receive the following TypeScript error:

TS2345: Argument of type '{ entity2: Entity2; }' is not assignable to parameter of type 'DeepPartial<Entity1>'.
   The types of 'entity2.entity3' are incompatible between these types.
      Type 'Entity3[]' is not assignable to type '(DeepPartial<Entity3> | undefined)[]'.
         Type 'Entity3' is not assignable to type 'DeepPartial<Entity3>'.
            Types of property '_permissions' are incompatible.
               Type 'unknown' is not assignable to type 'DeepPartial<unknown> | undefined'.
                  Type 'unknown' is not assignable to type 'DeepPartial<unknown>'.