diff --git a/.git_hooks/pre-commit b/.git_hooks/pre-commit
new file mode 100755
index 0000000..4dde641
--- /dev/null
+++ b/.git_hooks/pre-commit
@@ -0,0 +1,2 @@
+black --line-length=100 $(git diff --cached --name-only --diff-filter=ACM)
+git add $(git diff --cached --name-only --diff-filter=ACM)