diff --git a/.github/workflows/maven-pr.yml b/.github/workflows/maven-pr.yml
index 7a6cabc..96dcc2c 100644
--- a/.github/workflows/maven-pr.yml
+++ b/.github/workflows/maven-pr.yml
@@ -14,7 +14,7 @@ jobs:
       uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
-        java-version: '17'
+        java-version: '21'
         cache: 'maven'
 
     - name: Grant execute permission for mvnw
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 8dce7fd..31afea6 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -15,7 +15,7 @@ jobs:
       uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
-        java-version: '17'
+        java-version: '21'
         cache: 'maven'
 
     - name: Grant execute permission for mvnw
diff --git a/Dockerfile b/Dockerfile
index 20523c5..154b5e7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:17-jdk-alpine
+FROM openjdk:21-jdk-alpine
 VOLUME /tmp
 EXPOSE 8099
 RUN mkdir -p /app/
diff --git a/README.MD b/README.MD
index 3e31ad8..84aa9e4 100644
--- a/README.MD
+++ b/README.MD
@@ -73,7 +73,7 @@ The **authors** table should not be updatable via endpoints. Feel free to popula
 
 ## Prerequisites
 - Maven 3
-- JDK 17
+- JDK 21
 
 ## Build instructions
 
diff --git a/func-test/build.gradle b/func-test/build.gradle
index c7f17c5..605fa87 100644
--- a/func-test/build.gradle
+++ b/func-test/build.gradle
@@ -6,7 +6,7 @@ plugins {
 group 'by.andd3dfx'
 version '0.1'
 
-sourceCompatibility = 17
+sourceCompatibility = 21
 
 repositories {
     mavenLocal()
diff --git a/pom.xml b/pom.xml
index eb1eeb8..643898a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 
 		<spring-boot.version>3.3.0</spring-boot.version>
 		<mapstruct.version>1.5.5.Final</mapstruct.version>