diff --git a/dev-tools/scripts/buildAndPushRelease.py b/dev-tools/scripts/buildAndPushRelease.py
index 4820899b2d3..af4d7b98b7d 100644
--- a/dev-tools/scripts/buildAndPushRelease.py
+++ b/dev-tools/scripts/buildAndPushRelease.py
@@ -49,6 +49,7 @@ def runAndSendGPGPassword(command, password):
   p = subprocess.Popen(command, shell=True, bufsize=0, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.PIPE)
   f = open(LOG, 'ab')
   while True:
+    p.stdout.flush()
     line = p.stdout.readline()
     if len(line) == 0:
       break