diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 004d77ad31..a63d63f755 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -64,7 +64,7 @@ junit-testng = "1.0.5"
 junit4 = "4.13.2"
 junit5 = "5.11.0"
 jvm-dependency-conflict-resolution = "2.1.2"
-kotlin = "2.0.10"
+kotlin = "2.0.20"
 lincheck = "2.33"
 mockito = "5.12.0"
 nexus-publish = "2.0.0"
diff --git a/simulator/src/main/java/com/github/benmanes/caffeine/cache/simulator/report/csv/PlotCsv.java b/simulator/src/main/java/com/github/benmanes/caffeine/cache/simulator/report/csv/PlotCsv.java
index 55130a2f09..890aa63679 100644
--- a/simulator/src/main/java/com/github/benmanes/caffeine/cache/simulator/report/csv/PlotCsv.java
+++ b/simulator/src/main/java/com/github/benmanes/caffeine/cache/simulator/report/csv/PlotCsv.java
@@ -39,6 +39,7 @@
 import org.jfree.chart.plot.CategoryPlot;
 import org.jfree.chart.plot.DefaultDrawingSupplier;
 import org.jfree.chart.ui.RectangleInsets;
+import org.jfree.data.Range;
 import org.jfree.data.category.CategoryDataset;
 import org.jfree.data.category.DefaultCategoryDataset;
 
@@ -109,11 +110,30 @@ private void configurePlot(JFreeChart chart) {
     configureAxis(plot.getRangeAxis());
     configureGrid(plot);
 
+    plot.getRangeAxis().setAutoRange(false);
+    plot.getRangeAxis().setRange(calculateRange(plot));
+
     for (int i = 0; i < plot.getCategories().size(); i++) {
       plot.getRenderer().setSeriesStroke(i, new BasicStroke(3.0f));
     }
   }
 
+  private Range calculateRange(CategoryPlot plot) {
+    double upperBound = 0;
+    double lowerBound = 100;
+    for (int series = 0; series < plot.getDataset().getRowCount(); series++) {
+      for (int item = 0; item < plot.getDataset().getColumnCount(); item++) {
+        var value = plot.getDataset().getValue(series, item);
+        if (value != null) {
+          lowerBound = Math.min(lowerBound, value.doubleValue());
+          upperBound = Math.max(upperBound, value.doubleValue());
+        }
+      }
+    }
+    double margin = 0.1 * (upperBound - lowerBound);
+    return new Range(Math.max(0, lowerBound - margin), Math.min(100, upperBound + margin));
+  }
+
   private void applyTheme(JFreeChart chart) {
     var theme = (StandardChartTheme) StandardChartTheme.createJFreeTheme();
     theme.setDrawingSupplier(new DefaultDrawingSupplier(getWheelColors(),