diff --git a/static/brush-editor.js b/static/brush-editor.js
index 0fb4d26..7fbbaac 100644
--- a/static/brush-editor.js
+++ b/static/brush-editor.js
@@ -31,6 +31,7 @@ export class BrushEditor extends HTMLElement {
         });
         requestAnimationFrame(() => this.#resizeTextArea());
         document.fonts.addEventListener("loadingdone", () => this.#resizeTextArea());
+        new ResizeObserver(() => this.#resizeTextArea()).observe(this);
 
         this.errorHeader = this.appendChild(document.createElement("h1"));
         this.errorHeader.classList.add("error-header");