diff --git a/src/main/java/jbyoshi/gitupdate/ui/TreeBasedUI.java b/src/main/java/jbyoshi/gitupdate/ui/TreeBasedUI.java
index e6869ca..169abd1 100644
--- a/src/main/java/jbyoshi/gitupdate/ui/TreeBasedUI.java
+++ b/src/main/java/jbyoshi/gitupdate/ui/TreeBasedUI.java
@@ -142,9 +142,11 @@ private GUINodeView(String text) {
 		@Override
 		public ReportView newChild(String text) {
 			GUINodeView child = new GUINodeView(text);
-			model.insertNodeInto(child, this, getChildCount());
-			model.nodeChanged(this);
-			tree.expandPath(new TreePath(root.getPath()));
+			EventQueue.invokeLater(() -> {
+				model.insertNodeInto(child, this, getChildCount());
+				model.nodeChanged(this);
+				tree.expandPath(new TreePath(root.getPath()));
+			});
 			return child;
 		}
 
@@ -177,7 +179,7 @@ public void stateChanged(boolean error, boolean working, boolean future, boolean
 			} else {
 				icon = ICON_PLAIN;
 			}
-			model.nodeChanged(this);
+			EventQueue.invokeLater(() -> model.nodeChanged(this));
 		}
 	}