diff --git a/src/index.ts b/src/index.ts
index 105dd49..dbd82ca 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -28,6 +28,7 @@ export * from './types/sitelinks.js'
 export * from './types/snakvalue.js'
 export * from './types/sparql.js'
 export * from './types/terms.js'
+export * from './types/wbgetentities.js'
 
 // In case of missing types on Wbk, check ./wikibase-sdk.ts exports
 
diff --git a/src/types/wbgetentities.ts b/src/types/wbgetentities.ts
index a107903..b6f30ec 100644
--- a/src/types/wbgetentities.ts
+++ b/src/types/wbgetentities.ts
@@ -10,4 +10,5 @@ export interface WbGetEntities {
   languages?: string
   props?: string
   redirects?: 'yes' | 'no' // Default: yes
+  formatversion?: '1' | '2';
 }