diff --git a/tests/integration/hardhatprocess.nim b/tests/integration/hardhatprocess.nim
index c789a55e..0c7ffc08 100644
--- a/tests/integration/hardhatprocess.nim
+++ b/tests/integration/hardhatprocess.nim
@@ -22,9 +22,6 @@ export nodeprocess
 logScope:
   topics = "integration testing hardhat process"
 
-type HardhatProcess* = ref object of NodeProcess
-  logFile: ?IoHandle
-
 type
   OnOutputLineCaptured = proc(line: string) {.gcsafe, raises: [].}
   HardhatProcess* = ref object of NodeProcess
@@ -92,6 +89,7 @@ proc startNode*(
     args: seq[string],
     debug: string | bool = false,
     name: string,
+    onOutputLineCaptured: OnOutputLineCaptured = nil,
 ): Future[HardhatProcess] {.async.} =
   logScope:
     nodeName = name
@@ -113,6 +111,7 @@ proc startNode*(
     debug: ($debug != "false"),
     trackedFutures: TrackedFutures.new(),
     name: name,
+    onOutputLine: onOutputLineCaptured,
   )
 
   await hardhat.start()
@@ -122,7 +121,7 @@ proc startNode*(
 
   return hardhat
 
-method onOutputLineCaptured(node: HardhatProcess, line: string) =
+method onOutputLineCaptured(node: HardhatProcess, line: string) {.raises: [].} =
   logScope:
     nodeName = node.name