diff --git a/bip-0141.mediawiki b/bip-0141.mediawiki
index 12b0ebac..dd17eaad 100644
--- a/bip-0141.mediawiki
+++ b/bip-0141.mediawiki
@@ -249,7 +249,11 @@ As a soft fork, older software will continue to operate without modification.  N
 
 == Deployment ==
 
-This BIP is to be deployed by version-bits BIP9. Exact details TDB.
+This BIP will be deployed by "version bits" BIP9 using bit TBD.
+
+For Bitcoin mainnet, the BIP9 starttime will be midnight TBD UTC (Epoch timestamp TBD) and BIP9 timeout will be midnight TBD UTC (Epoch timestamp TBD).
+
+For Bitcoin testnet, the BIP9 starttime will be midnight TBD UTC (Epoch timestamp TBD) and BIP9 timeout will be midnight TBD UTC (Epoch timestamp TBD).
 
 == Credits ==