diff --git a/codex/contracts/config.nim b/codex/contracts/config.nim
index fd6a1fa8..76e00207 100644
--- a/codex/contracts/config.nim
+++ b/codex/contracts/config.nim
@@ -18,6 +18,10 @@ type
     timeout*: UInt256 # mark proofs as missing before the timeout (in seconds)
     downtime*: uint8 # ignore this much recent blocks for proof requirements
     zkeyHash*: string # hash of the zkey file which is linked to the verifier
+    # Ensures the pointer does not remain in downtime for many consecutive
+    # periods. For each period increase, move the pointer `pointerProduct`
+    # blocks. Should be a prime number to ensure there are no cycles.
+    downtimeProduct*: uint8
 
 
 func fromTuple(_: type ProofConfig, tupl: tuple): ProofConfig =
@@ -25,7 +29,8 @@ func fromTuple(_: type ProofConfig, tupl: tuple): ProofConfig =
     period: tupl[0],
     timeout: tupl[1],
     downtime: tupl[2],
-    zkeyHash: tupl[3]
+    zkeyHash: tupl[3],
+    downtimeProduct: tupl[4]
   )
 
 func fromTuple(_: type CollateralConfig, tupl: tuple): CollateralConfig =
diff --git a/tests/codex/helpers/mockmarket.nim b/tests/codex/helpers/mockmarket.nim
index 7c36bee7..30697f51 100644
--- a/tests/codex/helpers/mockmarket.nim
+++ b/tests/codex/helpers/mockmarket.nim
@@ -101,7 +101,8 @@ proc new*(_: type MockMarket): MockMarket =
     proofs: ProofConfig(
       period: 10.u256,
       timeout: 5.u256,
-      downtime: 64.uint8
+      downtime: 64.uint8,
+      downtimeProduct: 67.uint8
     )
   )
   MockMarket(signer: Address.example, config: config)
diff --git a/vendor/codex-contracts-eth b/vendor/codex-contracts-eth
index 7ad26688..ed428767 160000
--- a/vendor/codex-contracts-eth
+++ b/vendor/codex-contracts-eth
@@ -1 +1 @@
-Subproject commit 7ad26688a3b75b914d626e2623174a36f4425f51
+Subproject commit ed428767b3323048533b4d576888f36372bd9b27