diff --git a/package.json b/package.json
index c2d480e..c87cfc5 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
     "@holllo/webextension-storage": "^0.2.0",
     "caret-pos": "^2.0.0",
     "debounce": "^1.2.1",
+    "fast-diff": "^1.3.0",
     "modern-normalize": "^2.0.0",
     "platform": "^1.3.6",
     "preact": "^10.15.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0eb9c6a..9cd0d92 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -17,6 +17,9 @@ dependencies:
   debounce:
     specifier: ^1.2.1
     version: 1.2.1
+  fast-diff:
+    specifier: ^1.3.0
+    version: 1.3.0
   modern-normalize:
     specifier: ^2.0.0
     version: 2.0.0
@@ -3634,7 +3637,6 @@ packages:
 
   /fast-diff@1.3.0:
     resolution: {integrity: sha512-VxPP4NqbUjj6MaAOafWeUn2cXWLcCtljklUtZf0Ind4XQ+QPtmA0b18zZy0jIQx+ExRVCR/ZQpBmik5lXshNsw==}
-    dev: true
 
   /fast-glob@3.2.12:
     resolution: {integrity: sha512-DVj4CQIYYow0BlaelwK1pHl5n5cRSJfM60UA0zK891sVInoPri2Ekj7+e1CT3/3qxXenpI+nBBmQAcJPJgaj4w==}