diff --git a/src/main/java/Simulator.java b/src/main/java/Simulator.java
index abd5338..eb9a471 100644
--- a/src/main/java/Simulator.java
+++ b/src/main/java/Simulator.java
@@ -4,7 +4,6 @@ import org.jgrapht.alg.matching.MaximumWeightBipartiteMatching;
 import org.jgrapht.generate.SimpleWeightedBipartiteGraphMatrixGenerator;
 import org.jgrapht.graph.DefaultWeightedEdge;
 import org.jgrapht.graph.SimpleWeightedGraph;
-import org.jgrapht.util.ArrayUnenforcedSet;
 
 import java.math.BigDecimal;
 import java.math.MathContext;