diff --git a/package-lock.json b/package-lock.json
index 26436d6..e379947 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "MIT",
       "dependencies": {
         "@types/diff": "^7.0.2",
-        "diff": "^8.0.3",
+        "diff": "^9.0.0",
         "turndown": "^7.1.1",
         "turndown-plugin-gfm": "^1.0.2"
       },
@@ -3263,9 +3263,9 @@
       }
     },
     "node_modules/diff": {
-      "version": "8.0.3",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-8.0.3.tgz",
-      "integrity": "sha512-qejHi7bcSD4hQAZE0tNAawRK1ZtafHDmMTMkrrIGgSLl7hTnQHmKCeB45xAcbfTqK2zowkM3j3bHt/4b/ARbYQ==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-9.0.0.tgz",
+      "integrity": "sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw==",
       "license": "BSD-3-Clause",
       "engines": {
         "node": ">=0.3.1"
diff --git a/package.json b/package.json
index 8a6f34b..97c9724 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
   },
   "dependencies": {
     "@types/diff": "^7.0.2",
-    "diff": "^8.0.3",
+    "diff": "^9.0.0",
     "turndown": "^7.1.1",
     "turndown-plugin-gfm": "^1.0.2"
   },