diff --git a/govtool/metadata-validation/src/schemas/cipStandardSchema.ts b/govtool/metadata-validation/src/schemas/cipStandardSchema.ts
index 01ae93b64..751e323f6 100644
--- a/govtool/metadata-validation/src/schemas/cipStandardSchema.ts
+++ b/govtool/metadata-validation/src/schemas/cipStandardSchema.ts
@@ -64,9 +64,9 @@ export const cipStandardSchema: StandardSpecification = {
       '@value': Joi.string().valid('blake2b-256').required(),
     }),
     body: Joi.object({
-      bio: Joi.object({ '@value': Joi.string() }),
-      dRepName: Joi.object({ '@value': Joi.string() }),
-      email: Joi.object({ '@value': Joi.string() }),
+      bio: Joi.object({ '@value': Joi.string().allow('') }),
+      dRepName: Joi.object({ '@value': Joi.string().allow('') }),
+      email: Joi.object({ '@value': Joi.string().allow('') }),
       references: Joi.array().items(
         Joi.object({
           '@type': Joi.string(),