diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b7b71ab..73f4a54 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,10 +16,9 @@ jobs:
     strategy:
       matrix:
         ruby_version:
-          - '3.0'
-          - '3.1'
           - '3.2'
           - '3.3'
+          - '3.4'
 
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
diff --git a/README.md b/README.md
index 2bde27a..98c2709 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ A Flexible and Rake based dotfile manager.
 
 ### Prerequisite
 
-Ruby 3.0+
+Ruby 3.2 or later
 
 ### Installing