diff --git a/pom.xml b/pom.xml
index 42babc9..38c22f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <version>1.0-SNAPSHOT</version>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.release>22</maven.compiler.release>
+        <maven.compiler.release>21</maven.compiler.release>
         <exec.mainClass>BsK.LdS_BsK</exec.mainClass>
     </properties>
-</project>
\ No newline at end of file
+</project>