From 9a694a5db52d932a66d15716979fad4a21cc0ad8 Mon Sep 17 00:00:00 2001
From: Douglas Eichelberger <doug.eichelberger@gusto.com>
Date: Wed, 1 Jul 2026 12:50:37 -0700
Subject: [PATCH] ci: test against Ruby 4.0

Add Ruby 4.0 to the CI build matrix and quote all version numbers for consistency.
---
 .github/workflows/ci.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 96e386b..d004da6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,9 +9,9 @@ jobs:
       matrix:
         ruby:
           # See comment comes from https://github.com/ruby/setup-ruby#matrix-of-ruby-versions
-          - 3.3
-          - 3.4
-          - head
+          - '3.3'
+          - '3.4'
+          - '4.0'
     env:
       BUNDLE_GEMFILE: Gemfile
     name: "Tests: Ruby ${{ matrix.ruby }}"