diff --git a/tests/testfut.nim b/tests/testfut.nim
index dbc698e..c96b8be 100644
--- a/tests/testfut.nim
+++ b/tests/testfut.nim
@@ -74,7 +74,7 @@ proc testFuture4(): Future[int] {.async.} =
 
   ## Test for future which will be completed before timeout exceeded.
   try:
-    var res = await wait(testFuture1(), 150)
+    var res = await wait(testFuture1(), 300)
     result = 6
   except:
     result = -6