diff --git a/config/protocol.mainnet.yml b/config/protocol.mainnet.yml
index 19823ac16..cdfb0786f 100644
--- a/config/protocol.mainnet.yml
+++ b/config/protocol.mainnet.yml
@@ -36,6 +36,8 @@ ProtocolConfiguration:
   VerifyBlocks: true
   VerifyTransactions: false
   P2PSigExtensions: false
+  Hardforks:
+    HF_Aspidochelone: 2000000
   NativeActivations:
     ContractManagement: [0]
     StdLib: [0]