diff --git a/whipper/extern/task/task.py b/whipper/extern/task/task.py
index 86c00a8..250ccd6 100644
--- a/whipper/extern/task/task.py
+++ b/whipper/extern/task/task.py
@@ -550,6 +550,7 @@ class SyncRunner(TaskRunner, ITaskListener):
             print('\r', end='')
         if newline:
             print('')
+        sys.stdout.flush()
         if len(what) > self._longest:
             self._longest = len(what)