--- a/artifact-database/src/main/java/org/dive4elements/artifactdatabase/DefaultArtifactCollection.java	Fri Feb 25 16:58:11 2022 +0100
+++ b/artifact-database/src/main/java/org/dive4elements/artifactdatabase/DefaultArtifactCollection.java	Mon Feb 28 17:41:14 2022 +0100
@@ -16,7 +16,8 @@
 import java.util.List;
 import java.util.Map;
 
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 import org.w3c.dom.Document;
 
@@ -38,7 +39,7 @@
 {
     /** The logger used in this class. */
     private static Logger logger =
-        Logger.getLogger(DefaultArtifactCollection.class);
+        LogManager.getLogger(DefaultArtifactCollection.class);
 
     /** The identifier of the collection. */
     protected String identifier;