diff --git a/package-lock.json b/package-lock.json
index 9902de8..c726c97 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -26,7 +26,7 @@
         "turndown": "^7.2.2"
       },
       "devDependencies": {
-        "@types/diff": "^7.0.2",
+        "@types/diff": "^8.0.0",
         "@types/jest": "^30.0.0",
         "@types/jsdom": "^28.0.1",
         "@types/node": "^25.5.0",
@@ -1861,11 +1861,15 @@
       }
     },
     "node_modules/@types/diff": {
-      "version": "7.0.2",
-      "resolved": "https://registry.npmjs.org/@types/diff/-/diff-7.0.2.tgz",
-      "integrity": "sha512-JSWRMozjFKsGlEjiiKajUjIJVKuKdE3oVy2DNtK+fUo8q82nhFZ2CPQwicAIkXrofahDXrWJ7mjelvZphMS98Q==",
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/@types/diff/-/diff-8.0.0.tgz",
+      "integrity": "sha512-o7jqJM04gfaYrdCecCVMbZhNdG6T1MHg/oQoRFdERLV+4d+V7FijhiEAbFu0Usww84Yijk9yH58U4Jk4HbtzZw==",
+      "deprecated": "This is a stub types definition. diff provides its own type definitions, so you do not need this installed.",
       "dev": true,
-      "license": "MIT"
+      "license": "MIT",
+      "dependencies": {
+        "diff": "*"
+      }
     },
     "node_modules/@types/istanbul-lib-coverage": {
       "version": "2.0.6",
diff --git a/package.json b/package.json
index 20bb49f..3f3955b 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "turndown": "^7.2.2"
   },
   "devDependencies": {
-    "@types/diff": "^7.0.2",
+    "@types/diff": "^8.0.0",
     "@types/jest": "^30.0.0",
     "@types/jsdom": "^28.0.1",
     "@types/node": "^25.5.0",