diff --git a/pom.xml b/pom.xml
index d693ad2..90c2734 100755
--- a/pom.xml
+++ b/pom.xml
@@ -14,9 +14,9 @@
     <name>swiss-backend</name>
     <description>Swiss Backend</description>
     <properties>
-        <java.version>25</java.version>
-        <maven.compiler.source>25</maven.compiler.source>
-        <maven.compiler.target>25</maven.compiler.target>
+        <java.version>21</java.version>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
     </properties>
     <dependencies>
         <dependency>
@@ -155,8 +155,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.14.1</version>
                 <configuration>
-                    <source>25</source>
-                    <target>25</target>
+                    <source>21</source>
+                    <target>21</target>
                     <annotationProcessorPaths>
                         <path>
                             <groupId>org.projectlombok</groupId>