diff --git a/primitives/sp-eth-primitives/src/pow.rs b/primitives/sp-eth-primitives/src/pow.rs
index 364ec6e84..107e3f0bf 100644
--- a/primitives/sp-eth-primitives/src/pow.rs
+++ b/primitives/sp-eth-primitives/src/pow.rs
@@ -81,6 +81,7 @@ impl EthashPartial {
 				let mut m = BTreeMap::new();
 				m.insert(4370000, 3000000);
 				m.insert(7280000, 2000000);
+				m.insert(0x8c6180, 0x3d0900);
 				m
 			},
 			expip2_transition: u64::max_value(),
@@ -107,6 +108,7 @@ impl EthashPartial {
 				let mut m = BTreeMap::new();
 				m.insert(0x19f0a0, 0x2dc6c0);
 				m.insert(0x408b70, 0x1e8480);
+				m.insert(0x6c993d, 0x3d0900);
 				m
 			},
 			expip2_transition: u64::max_value(),