diff --git a/common/eth2_network_config/built_in_network_configs/kiln/config.yaml b/common/eth2_network_config/built_in_network_configs/kiln/config.yaml
index f85610028b..797c0672c3 100644
--- a/common/eth2_network_config/built_in_network_configs/kiln/config.yaml
+++ b/common/eth2_network_config/built_in_network_configs/kiln/config.yaml
@@ -24,7 +24,7 @@ ALTAIR_FORK_EPOCH: 50
 # Bellatrix
 BELLATRIX_FORK_VERSION: 0x70000071
 BELLATRIX_FORK_EPOCH: 150
-TERMINAL_TOTAL_DIFFICULTY: 1000000000000
+TERMINAL_TOTAL_DIFFICULTY: 20000000000000
 TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
 TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615