diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 554d166..a102b1f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,9 @@ jobs:
           - ruby-3.1
           - ruby-3.2
           - ruby-3.3
-          - jruby-9.3.0
+          - ruby-3.4
+          - jruby-9.4.12
+          - jruby-10.0.0
         os: [ ubuntu-latest ]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/README.md b/README.md
index f544393..ca79ce3 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,9 @@ versions:
 * Ruby 3.1
 * Ruby 3.2
 * Ruby 3.3
-* JRuby 9.3
+* Ruby 3.4
+* JRuby 9.4
+* JRuby 10.0
 
 If something doesn't work on one of these versions, it's a bug.