diff --git a/.github/workflows/prettier.yml b/.github/workflows/prettier.yml
index f9875609..60c5c13b 100644
--- a/.github/workflows/prettier.yml
+++ b/.github/workflows/prettier.yml
@@ -4,7 +4,7 @@ on:
       - main
   workflow_dispatch:
     branches:
-      - "**"
+      - '**'
 
 name: prettier
 
@@ -25,3 +25,4 @@ jobs:
           # This part is also where you can pass other options, for example:
           prettier_options: --write **/*.{sol,md,js}
           prettier_plugins: prettier-plugin-solidity
+          prettier_version: 2.8.8