--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/Fitting.java	Fri Feb 25 17:17:56 2022 +0100
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/Fitting.java	Wed Mar 02 10:26:50 2022 +0100
@@ -17,14 +17,15 @@
 import org.apache.commons.math.optimization.fitting.CurveFitter;
 import org.apache.commons.math.optimization.general.LevenbergMarquardtOptimizer;
 import org.apache.commons.math.stat.descriptive.moment.StandardDeviation;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 import org.dive4elements.river.artifacts.math.GrubbsOutlier;
 import org.dive4elements.river.artifacts.math.fitting.Function;
 
 public class Fitting
 {
-    private static Logger log = Logger.getLogger(Fitting.class);
+    private static Logger log = LogManager.getLogger(Fitting.class);
 
     /** Use instance of this factory to find meta infos for outliers. */
     public interface QWDFactory {