diff --git a/requirements.dev.txt b/requirements.dev.txt
index d3f4aa9..dd910ef 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -20,7 +20,7 @@ pexpect==4.2.1            # via ipython
 pickleshare==0.7.4        # via ipython
 pip-tools==1.8.1
 pkginfo==1.4.1            # via twine
-prompt-toolkit==1.0.13    # via ipython
+prompt-toolkit==1.0.18    # via ipython
 ptyprocess==0.5.1         # via pexpect
 pycodestyle==2.3.1        # via flake8
 pyflakes==1.5.0           # via flake8