diff --git a/test-requirements.txt b/test-requirements.txt
index e7ebf14dbb..9332be3e1f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -26,7 +26,7 @@ parso==0.3.1              # via jedi
 pexpect==4.6.0            # via ipython
 pickleshare==0.7.5        # via ipython
 pluggy==0.7.1             # via pytest
-prompt-toolkit==2.0.5     # via ipython
+prompt-toolkit==2.0.6     # via ipython
 ptyprocess==0.6.0         # via pexpect
 py==1.6.0                 # via pytest
 pycodestyle==2.3.1        # via flake8