diff --git a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests/NativeLeaseReleaseSoakTests.cs b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests/NativeLeaseReleaseSoakTests.cs
index 0624ebb8..a48d8b1f 100644
--- a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests/NativeLeaseReleaseSoakTests.cs
+++ b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests/NativeLeaseReleaseSoakTests.cs
@@ -54,7 +54,9 @@ public sealed class NativeLeaseReleaseSoakTests
             UseConnectedMessaging: true);
 
         using var budget = CancellationTokenSource.CreateLinkedTokenSource(TestContext.Current.CancellationToken);
-        budget.CancelAfter(TimeSpan.FromSeconds(120));
+        // ~1 s per cycle against ab_server (close + re-open + read), so the budget scales with the
+        // cycle count; a fixed budget made AB_LEASE_SOAK_CYCLES above ~100 time out, not fail.
+        budget.CancelAfter(TimeSpan.FromSeconds(60 + 3 * cycles));
 
         for (var i = 0; i < cycles; i++)
         {