diff --git a/examples/progress-bar/multi-thread-single-bar.py b/examples/progress-bar/multi-thread-single-bar.py
new file mode 100755
index 000000000..19a830d53
--- /dev/null
+++ b/examples/progress-bar/multi-thread-single-bar.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+"""
+Example of multi threading processes with ony one progress bar
+"""
+from prompt_toolkit.shortcuts import ProgressBar
+from threading import Thread, Lock
+import time
+
+lock = Lock()
+
+def nextt(b):
+   lock.acquire()
+   next(b)
+   lock.release()
+
+def test(b):
+    for i in range(10):
+        nextt(b)
+        time.sleep(.5)
+
+with ProgressBar() as pb:
+    total = 100
+    thrds = []
+    pbr = iter(pb(range(total)))
+    for i in range(10):
+        t = Thread(target=test, args=(pbr,))
+        t.start()
+        thrds.append(t)
+    for t in thrds:
+        t.join()