diff --git a/dag/dag_test.go b/dag/dag_test.go
index 6e2690c..4530c2c 100644
--- a/dag/dag_test.go
+++ b/dag/dag_test.go
@@ -754,7 +754,7 @@ func TestMaxParallel(t *testing.T) {
 			// routines to reach it then release the lock.
 			workMutex.Lock()
 			go func() {
-				time.Sleep(50 * time.Millisecond)
+				time.Sleep(70 * time.Millisecond)
 				workMutex.Unlock()
 			}()