diff --git a/Dockerfile b/Dockerfile
index 5582202a..3412c4ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM eclipse-temurin:17.0.13_11-jre-focal
+FROM eclipse-temurin:21.0.11_10-jre-noble
 
 ARG jar
 
diff --git a/build.gradle b/build.gradle
index 5b4d7c4f..fb79fb25 100644
--- a/build.gradle
+++ b/build.gradle
@@ -84,10 +84,10 @@ dependencies {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(17))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
 }
 
 tasks.withType(JavaCompile).configureEach {