diff --git a/Stellar-contract-config-setting.x b/Stellar-contract-config-setting.x
index 0c52c8c..04e28d2 100644
--- a/Stellar-contract-config-setting.x
+++ b/Stellar-contract-config-setting.x
@@ -150,7 +150,9 @@ enum ConfigSettingID
     CONFIG_SETTING_CONTRACT_META_DATA_V0 = 4,
     CONFIG_SETTING_CONTRACT_BANDWIDTH_V0 = 5,
     CONFIG_SETTING_CONTRACT_COST_PARAMS_CPU_INSTRUCTIONS = 6,
-    CONFIG_SETTING_CONTRACT_COST_PARAMS_MEMORY_BYTES = 7
+    CONFIG_SETTING_CONTRACT_COST_PARAMS_MEMORY_BYTES = 7,
+    CONFIG_SETTING_CONTRACT_DATA_KEY_SIZE_BYTES = 8,
+    CONFIG_SETTING_CONTRACT_DATA_ENTRY_SIZE_BYTES = 9
 };
 
 union ConfigSettingEntry switch (ConfigSettingID configSettingID)
@@ -170,6 +172,10 @@ case CONFIG_SETTING_CONTRACT_BANDWIDTH_V0:
 case CONFIG_SETTING_CONTRACT_COST_PARAMS_CPU_INSTRUCTIONS:
     ContractCostParams contractCostParamsCpuInsns;
 case CONFIG_SETTING_CONTRACT_COST_PARAMS_MEMORY_BYTES:
-    ContractCostParams contractCostParamsMemBytes;    
+    ContractCostParams contractCostParamsMemBytes;
+case CONFIG_SETTING_CONTRACT_DATA_KEY_SIZE_BYTES:
+    uint32 contractDataKeySizeBytes;
+case CONFIG_SETTING_CONTRACT_DATA_ENTRY_SIZE_BYTES:
+    uint32 contractDataEntrySizeBytes;
 };
 }
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