diff --git a/setup.py b/setup.py
index 44975df..4a81a4f 100755
--- a/setup.py
+++ b/setup.py
@@ -196,7 +196,7 @@ install_requires = [
     'pickleshare',
     'simplegeneric>0.8',
     'traitlets>=4.2',
-    'prompt_toolkit>=1.0.1,<2.0.0',
+    'prompt_toolkit>=1.0.3,<2.0.0',
     'pygments',
 ]