diff --git a/PPOCRLabel/PPOCRLabel.py b/PPOCRLabel/PPOCRLabel.py
index 390c2b159575bf1c60387e42b5be3d917ba845f7..153837f8f5b686732c0d4cc8e4a6f9894a897186 100644
--- a/PPOCRLabel/PPOCRLabel.py
+++ b/PPOCRLabel/PPOCRLabel.py
@@ -2715,6 +2715,10 @@ class MainWindow(QMainWindow):
 
             self._update_shape_color(shape)
             self.keyDialog.addLabelHistory(key_text)
+            
+            # save changed shape
+            self.singleLabel(shape)
+            self.setDirty()
 
     def undoShapeEdit(self):
         self.canvas.restoreShape()