diff --git a/programs/validator-history/idl/validator_history.json b/programs/validator-history/idl/validator_history.json
index 82d5f431..e61faaf3 100644
--- a/programs/validator-history/idl/validator_history.json
+++ b/programs/validator-history/idl/validator_history.json
@@ -954,6 +954,11 @@
       "code": 6011,
       "name": "EpochTooLarge",
       "msg": "Epoch larger than 65535, cannot be stored"
+    },
+    {
+      "code": 6012,
+      "name": "DuplicateEpoch",
+      "msg": "Inserting duplicate epoch"
     }
   ]
 }
\ No newline at end of file