diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8a72a39..accfeac 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       matrix:
         ruby-version:
           - "3.4"
-	  - "4.0"
+          - "4.0"
 
     steps:
       - name: Checkout