diff --git a/.drone.yml b/.drone.yml
index f320488..92e4e81 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -22,10 +22,10 @@ steps:
 ---
 kind: pipeline
 type: docker
-name: java20
+name: java21
 
 steps:
   - name: test
-    image: maven:3-eclipse-temurin-20
+    image: maven:3-eclipse-temurin-21
     commands:
       - mvn -B clean test
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b13ddb0..3d905c9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        jdk: [ 11, 17, 20 ]
+        jdk: [ 11, 17, 21 ]
         include:
           - jdk: 11
             analysis: true