diff --git a/.github/workflows/ruby-build.yml b/.github/workflows/ruby-build.yml
index e9abf1f..fe902e9 100644
--- a/.github/workflows/ruby-build.yml
+++ b/.github/workflows/ruby-build.yml
@@ -25,6 +25,7 @@ jobs:
         ruby-version:
           - jruby-9.2
           - jruby-9.3
+          - jruby-9.4
           - jruby-head
 
     steps: