diff --git a/nucypher/blockchain/eth/sol/source/contracts/MiningAdjudicator.sol b/nucypher/blockchain/eth/sol/source/contracts/MiningAdjudicator.sol
index 57945b228..4250aa169 100644
--- a/nucypher/blockchain/eth/sol/source/contracts/MiningAdjudicator.sol
+++ b/nucypher/blockchain/eth/sol/source/contracts/MiningAdjudicator.sol
@@ -14,6 +14,7 @@ contract MiningAdjudicator {
 
     uint8 public constant UMBRAL_PARAMETER_U_SIGN = 0x02;
     uint256 public constant UMBRAL_PARAMETER_U_XCOORD = 0x03c98795773ff1c241fc0b1cced85e80f8366581dda5c9452175ebd41385fa1f;
+    uint256 public constant UMBRAL_PARAMETER_U_YCOORD = 0x7880ed56962d7c0ae44d6f14bb53b5fe64b31ea44a41d0316f3a598778f0f936;
 
     using UmbralDeserializer for bytes;
 
diff --git a/tests/blockchain/eth/contracts/main/mining_adjudicator/test_mining_adjudicator.py b/tests/blockchain/eth/contracts/main/mining_adjudicator/test_mining_adjudicator.py
index f5f0dc1a3..f3c9e15f8 100644
--- a/tests/blockchain/eth/contracts/main/mining_adjudicator/test_mining_adjudicator.py
+++ b/tests/blockchain/eth/contracts/main/mining_adjudicator/test_mining_adjudicator.py
@@ -89,6 +89,7 @@ def test_evaluate_cfrag(testerchain, escrow, adjudicator_contract):
     u_sign = 2 + (u_ycoord % 2)
     assert u_sign == adjudicator_contract.functions.UMBRAL_PARAMETER_U_SIGN().call()
     assert u_xcoord == adjudicator_contract.functions.UMBRAL_PARAMETER_U_XCOORD().call()
+    assert u_ycoord == adjudicator_contract.functions.UMBRAL_PARAMETER_U_YCOORD().call()
 
     # TODO: Move this to an integration test
     test_data = os.urandom(40)