diff --git a/.github/workflows/darker.yaml b/.github/workflows/darker.yaml
index d4e8a69..60beef8 100644
--- a/.github/workflows/darker.yaml
+++ b/.github/workflows/darker.yaml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: "3.11"
-      - uses: akaihola/darker@v2.1.1
+      - uses: akaihola/darker@v3.0.0
         with:
           options: "--check --diff"
           src: "./src"