diff --git a/packages/apps-config/src/api/spec/kulupu.ts b/packages/apps-config/src/api/spec/kulupu.ts
index 3b193d0b81..076685d2c3 100644
--- a/packages/apps-config/src/api/spec/kulupu.ts
+++ b/packages/apps-config/src/api/spec/kulupu.ts
@@ -10,5 +10,10 @@ export default {
   DifficultyAndTimestamp: {
     difficulty: 'Difficulty',
     timestamp: 'Moment'
+  },
+  Era: {
+    genesisBlockHash: 'H256',
+    finalBlockHash: 'H256',
+    finalStateRoot: 'H256'
   }
 };