diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e66667a..b2711e1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
           - java: 8
             sbt_version: "1.2.8"
           - java: 8
-          - java: 11
+          - java: 21
     steps:
     - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
       with: