diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index b758076..94fc85f 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -22,3 +22,4 @@ jobs:
           commit_options: "--author 'github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>'"
           commit_message: "style: format code with prettier"
           prettier_options: "--write styles/**/*.css"
+          prettier_version: "2.8.4"