diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index b5732e1..59cd220 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -18,13 +18,10 @@ permissions:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         ruby-version: 
-        - '2.0'
-        - '2.1'
-        - '2.2'
         - '2.3'
         - '2.4'
         - '2.5'
@@ -32,9 +29,11 @@ jobs:
         - '2.7'
         - '3.0'
         - '3.1'
+        - '3.4'
         - jruby-9.1.17.0
         - jruby-9.2.21.0
         - jruby-9.3.6.0
+        - jruby-9.4.9.0
 
     steps:
     - uses: actions/checkout@v3