diff --git a/core/src/main/java/org/eqasim/core/simulation/mode_choice/epsilon/EpsilonModule.java b/core/src/main/java/org/eqasim/core/simulation/mode_choice/epsilon/EpsilonModule.java
index d80135491..0389748c1 100644
--- a/core/src/main/java/org/eqasim/core/simulation/mode_choice/epsilon/EpsilonModule.java
+++ b/core/src/main/java/org/eqasim/core/simulation/mode_choice/epsilon/EpsilonModule.java
@@ -3,7 +3,8 @@
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import com.google.inject.Provides;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.eqasim.core.components.config.EqasimConfigGroup;
 import org.eqasim.core.simulation.mode_choice.AbstractEqasimExtension;
 import org.eqasim.core.simulation.mode_choice.utilities.UtilityEstimator;
@@ -15,7 +16,7 @@
 
 public class EpsilonModule extends AbstractEqasimExtension {
 
-	public static final Logger logger = Logger.getLogger(EpsilonModule.class);
+	public static final Logger logger = LogManager.getLogger(EpsilonModule.class);
 
 	public static final String EPSILON_UTILITY_PREFIX = "epsilon_";
 	@Provides
diff --git a/core/src/main/java/org/eqasim/core/simulation/modes/drt/utils/CreateDrtVehicles.java b/core/src/main/java/org/eqasim/core/simulation/modes/drt/utils/CreateDrtVehicles.java
index feda7e3a4..24e7a88ca 100644
--- a/core/src/main/java/org/eqasim/core/simulation/modes/drt/utils/CreateDrtVehicles.java
+++ b/core/src/main/java/org/eqasim/core/simulation/modes/drt/utils/CreateDrtVehicles.java
@@ -1,6 +1,7 @@
 package org.eqasim.core.simulation.modes.drt.utils;
 
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.matsim.api.core.v01.Id;
 import org.matsim.api.core.v01.network.Link;
 import org.matsim.api.core.v01.network.Network;
@@ -15,7 +16,7 @@
 import java.util.Random;
 
 public class CreateDrtVehicles {
-    private final static Logger logger = Logger.getLogger(CreateDrtVehicles.class);
+    private final static Logger logger = LogManager.getLogger(CreateDrtVehicles.class);
 
     public final static long DEFAULT_RANDOM_SEED = 1234;