diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index f3321dd..7026ce1 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -14,6 +14,8 @@ jobs:
 
       - name: Run Python code formatting with Black
         uses: lgeiger/black-action@v1.0.1
+        with:
+          args: "."
 
       - name: Commit changes made by Black
         uses: stefanzweifel/git-auto-commit-action@v5
diff --git a/README.md b/README.md
index 909acd3..a75fa60 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # Boruvka's Algorithm
 
+[![code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![Test](https://github.com/IsaacCheng9/boruvkas-algorithm/actions/workflows/test.yml/badge.svg)](https://github.com/IsaacCheng9/boruvkas-algorithm/actions/workflows/test.yml)
+
 An implementation of Boruvka's algorithm to find a minimum spanning tree in a graph.
 
 [Link to narrated video demonstration on YouTube.](https://www.youtube.com/watch?v=n5LNVobuBNU)