diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 40ae29c..3401092 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -10,11 +10,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: '17'
-          distribution: 'adopt'
+          java-version: '21'
+          distribution: 'temurin'
           cache: 'sbt'
 
       - name: Check formatting