diff --git a/pre-commit.d/black.sh b/pre-commit.d/black.sh
new file mode 100644
index 0000000..50acaf5
--- /dev/null
+++ b/pre-commit.d/black.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+FILES=$(git diff --cached --name-only --diff-filter=ACM "*.py" | sed 's| |\\ |g')
+
+LINE_LENGTH=90
+
+if [ ! -z "$FILES" ]; then
+    # Format all selected files
+    echo "$FILES" | xargs $HOME/.local/bin/black -l $LINE_LENGTH
+
+    if [ $? -ne 0 ]; then
+        exit 1
+    fi
+
+    # Add back the modified files to staging
+    echo "$FILES" | xargs git add
+fi