diff --git a/beacon_chain/types/src/chain_config.rs b/beacon_chain/types/src/chain_config.rs
index bfb89f792..49128b49f 100644
--- a/beacon_chain/types/src/chain_config.rs
+++ b/beacon_chain/types/src/chain_config.rs
@@ -3,8 +3,10 @@ use super::ValidatorRegistration;
 #[derive(Debug, Clone, PartialEq)]
 pub struct ChainConfig {
     pub cycle_length: u8,
+    pub deposit_size_gwei: u64,
     pub shard_count: u16,
     pub min_committee_size: u64,
+    pub max_validator_churn_quotient: u64,
     pub genesis_time: u64,
     pub slot_duration_millis: u64,
     pub initial_validators: Vec<ValidatorRegistration>,
@@ -13,15 +15,17 @@ pub struct ChainConfig {
 /*
  * Presently this is just some arbitrary time in Sept 2018.
  */
-const GENESIS_TIME: u64 = 1_537_488_655;
+const TEST_GENESIS_TIME: u64 = 1_537_488_655;
 
 impl ChainConfig {
     pub fn standard() -> Self {
         Self {
             cycle_length: 64,
+            deposit_size_gwei: 32 * 10^9,
             shard_count: 1024,
             min_committee_size: 128,
-            genesis_time: GENESIS_TIME,
+            max_validator_churn_quotient: 32,
+            genesis_time: TEST_GENESIS_TIME,
             slot_duration_millis: 16 * 1000,
             initial_validators: vec![],
         }
@@ -45,9 +49,11 @@ impl ChainConfig {
     pub fn super_fast_tests() -> Self {
         Self {
             cycle_length: 2,
+            deposit_size_gwei: 32 * 10^9,
             shard_count: 2,
             min_committee_size: 2,
-            genesis_time: GENESIS_TIME,   // arbitrary
+            max_validator_churn_quotient: 32,
+            genesis_time: TEST_GENESIS_TIME,   // arbitrary
             slot_duration_millis: 16 * 1000,
             initial_validators: vec![],
         }