diff --git a/dev-requirements.txt b/dev-requirements.txt
index 05a9a8f4..54a64481 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -9,6 +9,7 @@ cryptography
 html5lib  # needed for beautifulsoup
 mock
 notebook
+pre-commit
 pytest-asyncio
 pytest-cov
 pytest>=3.3