From fb4b34986552536e70683a6e760aead9282d7b6b Mon Sep 17 00:00:00 2001
From: Sebastian Peter <sebastian.peter@tu-dortmund.de>
Date: Fri, 19 Sep 2025 16:02:46 +0200
Subject: [PATCH] Updating Java to v21

---
 .github/workflows/ci.yml | 2 +-
 CHANGELOG.md             | 1 +
 build.gradle             | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0a7656e..5d26d0e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 17
+          java-version: 21
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c02a7cf..979fa43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Update
 - Updating gradle to 9.1.0 [#248](https://github.com/ie3-institute/powerflow/issues/248)
+- Updating Java to 21 [#251](https://github.com/ie3-institute/powerflow/issues/251)
 
 ## [0.3]
 
diff --git a/build.gradle b/build.gradle
index 13014eb..e3cdc59 100644
--- a/build.gradle
+++ b/build.gradle
@@ -11,7 +11,7 @@ plugins {
 }
 
 ext {
-  javaVersion = JavaVersion.VERSION_17
+  javaVersion = JavaVersion.VERSION_21
   scalaVersion = '3'
   scalaBinaryVersion = '3.7.0'