diff --git a/Sources/CodeEditTextView/Highlighting/Highlighter.swift b/Sources/CodeEditTextView/Highlighting/Highlighter.swift
index ebda49b97..bdf5b103e 100644
--- a/Sources/CodeEditTextView/Highlighting/Highlighter.swift
+++ b/Sources/CodeEditTextView/Highlighting/Highlighter.swift
@@ -278,6 +278,9 @@ extension Highlighter: NSTextStorageDelegate {
         }
 
         let range = NSRange(location: editedRange.location, length: editedRange.length - delta)
+        if delta > 0 {
+            visibleSet.insert(range: editedRange)
+        }
 
         highlightProvider?.applyEdit(textView: self.textView,
                                      range: range,