diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index a083132203..1f375461d9 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     strategy:
       matrix:
-        java: [11, 17]
+        java: [11, 17, 21]
       fail-fast: false
 
     runs-on: ubuntu-latest
diff --git a/.github/workflows/performance-test-compile.yml b/.github/workflows/performance-test-compile.yml
index 6c8ea1b9e4..f7c7840761 100644
--- a/.github/workflows/performance-test-compile.yml
+++ b/.github/workflows/performance-test-compile.yml
@@ -19,7 +19,7 @@ jobs:
   build:
     strategy:
       matrix:
-        java: [11, 17]
+        java: [11, 17, 21]
 
     runs-on: ubuntu-latest
 
diff --git a/build.gradle b/build.gradle
index db2552e774..3d720a6f34 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ buildscript {
 }
 
 plugins {
-    id 'com.diffplug.spotless' version '6.11.0'
+    id 'com.diffplug.spotless' version '6.22.0'
     id 'io.spring.dependency-management' version '1.1.0'
 }