diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 69c37b8..b427274 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: '17'
+          java-version: '21'
           cache: sbt
 
       - run: sbt 'scalafixAll --check' scalafmtSbtCheck scalafmtCheck