diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 36f6cf3..22ca489 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,5 +1,5 @@
 name: test
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 jobs:
   build:
     name: ${{ matrix.os }} Ruby ${{ matrix.ruby }}
@@ -8,7 +8,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu", "macos"]
-        ruby: ["3.1", "3.2", "3.3"]
+        ruby: ["3.2", "3.3", "3.4"]
     steps:
       - uses: actions/checkout@v4
         with: