diff --git a/packages/blocks-editor/src/Lexical/Theme/editor.scss b/packages/blocks-editor/src/Lexical/Theme/editor.scss
index 864ed5f96..a803227db 100644
--- a/packages/blocks-editor/src/Lexical/Theme/editor.scss
+++ b/packages/blocks-editor/src/Lexical/Theme/editor.scss
@@ -325,6 +325,7 @@
 }
 .Lexical__listItemChecked {
   text-decoration: line-through;
+  opacity: 0.4;
 }
 .Lexical__listItemUnchecked:before,
 .Lexical__listItemChecked:before {