diff --git a/addons/addon-webgl/src/WebglRenderer.ts b/addons/addon-webgl/src/WebglRenderer.ts
index 14fc6cdb..3e93ca85 100644
--- a/addons/addon-webgl/src/WebglRenderer.ts
+++ b/addons/addon-webgl/src/WebglRenderer.ts
@@ -107,12 +107,11 @@ export class WebglRenderer extends Disposable implements IRenderer {
     this._updateDimensions();
     this._updateCursorBlink();
     this._register(_optionsService.onOptionChange(() => this._handleOptionsChanged()));
-    this._textBlinkStateManager = new TextBlinkStateManager(
+    this._textBlinkStateManager = this._register(new TextBlinkStateManager(
       () => this._requestRedrawViewport(),
       this._coreBrowserService
-    );
+    ));
     this._textBlinkStateManager.setIntervalDuration(this._optionsService.rawOptions.blinkIntervalDuration);
-    this._register(toDisposable(() => this._textBlinkStateManager.dispose()));
 
     this._deviceMaxTextureSize = this._gl.getParameter(this._gl.MAX_TEXTURE_SIZE);
 
diff --git a/src/browser/renderer/dom/DomRenderer.ts b/src/browser/renderer/dom/DomRenderer.ts
index c00f67a3..23273308 100644
--- a/src/browser/renderer/dom/DomRenderer.ts
+++ b/src/browser/renderer/dom/DomRenderer.ts
@@ -98,12 +98,11 @@ export class DomRenderer extends Disposable implements IRenderer {
     this._cursorBlinkStateManager = new CursorBlinkStateManager(this._rowContainer, this._coreBrowserService);
     this._register(addDisposableListener(this._document, 'mousedown', () => this._cursorBlinkStateManager.restartBlinkAnimation()));
     this._register(toDisposable(() => this._cursorBlinkStateManager.dispose()));
-    this._textBlinkStateManager = new TextBlinkStateManager(
+    this._textBlinkStateManager = this._register(new TextBlinkStateManager(
       () => this._onRequestRedraw.fire({ start: 0, end: this._bufferService.rows - 1 }),
       this._coreBrowserService
-    );
+    ));
     this._textBlinkStateManager.setIntervalDuration(this._optionsService.rawOptions.blinkIntervalDuration);
-    this._register(toDisposable(() => this._textBlinkStateManager.dispose()));
 
     this._register(toDisposable(() => {
       this._element.classList.remove(TERMINAL_CLASS_PREFIX + this._terminalClass);