diff --git a/spec.json b/spec.json
index b5e800e..ed7df81 100644
--- a/spec.json
+++ b/spec.json
@@ -24,7 +24,10 @@
           }
         },
         "blockRewardContractAddress": "0x3145197AD50D7083D0222DE4fCCf67d9BD05C30D",
-        "blockRewardContractTransition": 4639000
+        "blockRewardContractTransition": 4639000,
+        "randomnessContractAddress": {
+          "13391641": "0x8f2b78169B0970F11a762e56659Db52B59CBCf1B"
+        }
       }
     }
   },