diff --git a/src/PhpSpreadsheet/ReferenceHelper.php b/src/PhpSpreadsheet/ReferenceHelper.php
index 54bc182a8e..ef3e4f1100 100644
--- a/src/PhpSpreadsheet/ReferenceHelper.php
+++ b/src/PhpSpreadsheet/ReferenceHelper.php
@@ -4,6 +4,8 @@
 
 use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
 use PhpOffice\PhpSpreadsheet\Cell\DataType;
+use PhpOffice\PhpSpreadsheet\Chart\DataSeries;
+use PhpOffice\PhpSpreadsheet\Chart\DataSeriesValues;
 use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
 
 class ReferenceHelper
@@ -819,6 +821,39 @@ public function updateNamedFormulas(Spreadsheet $spreadsheet, $oldName = '', $ne
                     }
                 }
             }
+
+            foreach ($sheet->getChartCollection() as $chart) {
+                /** @var DataSeries $plotGroup */
+                foreach ($chart->getPlotArea()->getPlotGroup() as $plotGroup) {
+                    /** @var DataSeriesValues $plotCategory */
+                    foreach ($plotGroup->getPlotCategories() as $plotCategory) {
+                        $dataSource = $plotCategory->getDataSource();
+                        if (strpos($dataSource, $oldName) !== false) {
+                            $dataSource = str_replace("'" . $oldName . "'!", "'" . $newName . "'!", $dataSource);
+                            $dataSource = str_replace($oldName . '!', $newName . '!', $dataSource);
+                            $plotCategory->setDataSource($dataSource);
+                        }
+                    }
+                    /** @var DataSeriesValues $plotLabel */
+                    foreach ($plotGroup->getPlotLabels() as $plotLabel) {
+                        $dataSource = $plotLabel->getDataSource();
+                        if (strpos($dataSource, $oldName) !== false) {
+                            $dataSource = str_replace("'" . $oldName . "'!", "'" . $newName . "'!", $dataSource);
+                            $dataSource = str_replace($oldName . '!', $newName . '!', $dataSource);
+                            $plotLabel->setDataSource($dataSource);
+                        }
+                    }
+                    /** @var DataSeriesValues $plotValue */
+                    foreach ($plotGroup->getPlotValues() as $plotValue) {
+                        $dataSource = $plotValue->getDataSource();
+                        if (strpos($dataSource, $oldName) !== false) {
+                            $dataSource = str_replace("'" . $oldName . "'!", "'" . $newName . "'!", $dataSource);
+                            $dataSource = str_replace($oldName . '!', $newName . '!', $dataSource);
+                            $plotValue->setDataSource($dataSource);
+                        }
+                    }
+                }
+            }
         }
     }