diff --git a/pom.xml b/pom.xml
index 5c582b5e37..fcbc1c469d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,6 +32,8 @@
     <properties>
         <licenseName>community</licenseName>
 
+        <maven.build.sourceVersion>11</maven.build.sourceVersion>
+
         <dir.root>${project.build.directory}/alf_data</dir.root>
         <img.exe>convert</img.exe>