diff --git a/lib/pt-v5-prize-pool b/lib/pt-v5-prize-pool
index 7e31113..db68a5d 160000
--- a/lib/pt-v5-prize-pool
+++ b/lib/pt-v5-prize-pool
@@ -1 +1 @@
-Subproject commit 7e3111303d8b289516e65159764b9a8d0e4a5ce5
+Subproject commit db68a5d96ccb3d449f3c8ed0d668dc85efe81040
diff --git a/src/Claimer.sol b/src/Claimer.sol
index a87c7bc..9e8d8bc 100644
--- a/src/Claimer.sol
+++ b/src/Claimer.sol
@@ -242,7 +242,7 @@ contract Claimer {
     }
     uint256 _maxFee = _computeMaxFee(_tier);
     SD59x18 perTimeUnit = LinearVRGDALib.getPerTimeUnit(
-      prizePool.estimatedPrizeCount(),
+      prizePool.estimatedPrizeCountWithBothCanaries(),
       timeToReachMaxFee
     );
     uint256 elapsed = block.timestamp - (prizePool.lastAwardedDrawAwardedAt());
diff --git a/test/Claimer.t.sol b/test/Claimer.t.sol
index 82e888a..281ddd8 100644
--- a/test/Claimer.t.sol
+++ b/test/Claimer.t.sol
@@ -332,7 +332,7 @@ contract ClaimerTest is Test {
     uint prizeCount = 10;
     vm.mockCall(
       address(prizePool),
-      abi.encodeWithSignature("estimatedPrizeCount()"),
+      abi.encodeWithSignature("estimatedPrizeCountWithBothCanaries()"),
       abi.encode(prizeCount)
     );
     vm.mockCall(
@@ -358,7 +358,7 @@ contract ClaimerTest is Test {
     uint prizeCount = 10;
     vm.mockCall(
       address(prizePool),
-      abi.encodeWithSignature("estimatedPrizeCount()"),
+      abi.encodeWithSignature("estimatedPrizeCountWithBothCanaries()"),
       abi.encode(prizeCount)
     );
     vm.mockCall(
@@ -390,7 +390,7 @@ contract ClaimerTest is Test {
     );
     vm.mockCall(
       address(prizePool),
-      abi.encodeWithSignature("estimatedPrizeCount()"),
+      abi.encodeWithSignature("estimatedPrizeCountWithBothCanaries()"),
       abi.encodePacked(ESTIMATED_PRIZES)
     );
     vm.mockCall(