diff --git a/progressbar/compat.py b/progressbar/compat.py
index de99344..a39f4a1 100644
--- a/progressbar/compat.py
+++ b/progressbar/compat.py
@@ -1,4 +1,3 @@
-#!/usr/bin/python
 # -*- coding: utf-8 -*-
 #
 # progressbar  - Text progress bar library for Python.
diff --git a/progressbar/progressbar.py b/progressbar/progressbar.py
index 5048d14..5d88988 100644
--- a/progressbar/progressbar.py
+++ b/progressbar/progressbar.py
@@ -1,4 +1,3 @@
-#!/usr/bin/python
 # -*- coding: utf-8 -*-
 #
 # progressbar  - Text progress bar library for Python.
@@ -262,6 +261,7 @@ def update(self, value=None):
         self.seconds_elapsed = now - self.start_time
         self.next_update = self.currval + self.update_interval
         self.fd.write(self._format_line() + '\r')
+        self.fd.flush()
         self.last_update_time = now
 
 
diff --git a/progressbar/widgets.py b/progressbar/widgets.py
index d14a383..4ec2474 100644
--- a/progressbar/widgets.py
+++ b/progressbar/widgets.py
@@ -1,4 +1,3 @@
-#!/usr/bin/python
 # -*- coding: utf-8 -*-
 #
 # progressbar  - Text progress bar library for Python.