diff --git a/build/buildconstants/params_calibnet.go b/build/buildconstants/params_calibnet.go
index 4dd6714c00..47d2eea8e9 100644
--- a/build/buildconstants/params_calibnet.go
+++ b/build/buildconstants/params_calibnet.go
@@ -102,8 +102,8 @@ const UpgradeWaffleHeight = 1779094
 // 2024-10-23T13:30:00Z
 const UpgradeTuktukHeight = 2078794
 
-// ??????
-const UpgradeTeepHeight = 999999999999999
+// 2024-12-16T23:00:00Z
+const UpgradeTeepHeight = 2235454
 
 // FIP-0081: for the power actor state for pledge calculations.
 // UpgradeTuktukPowerRampDurationEpochs ends up in the power actor state after