diff --git a/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChains.java b/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChains.java
index d3424b98..b43f4fbc 100644
--- a/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChains.java
+++ b/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChains.java
@@ -45,9 +45,9 @@
 import java.io.IOException;
 import java.util.*;
 
+import jakarta.validation.constraints.NotNull;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.jetbrains.annotations.NotNull;
 import org.matsim.api.core.v01.Id;
 import org.matsim.api.core.v01.Scenario;
 import org.matsim.api.core.v01.TransportMode;
diff --git a/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChainsWithToll.java b/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChainsWithToll.java
index c1d277be..adb7ae41 100644
--- a/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChainsWithToll.java
+++ b/src/main/java/org/matsim/freight/logistics/examples/multipleChains/ExampleTwoLspsGroceryDeliveryMultipleChainsWithToll.java
@@ -24,9 +24,9 @@
 import java.io.IOException;
 import java.util.*;
 
+import jakarta.validation.constraints.NotNull;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.jetbrains.annotations.NotNull;
 import org.matsim.analysis.personMoney.PersonMoneyEventsAnalysisModule;
 import org.matsim.api.core.v01.Id;
 import org.matsim.api.core.v01.Scenario;