diff --git a/eslint/.eslintrc.js b/eslint/.eslintrc.js
index 19524a88..4c102093 100644
--- a/eslint/.eslintrc.js
+++ b/eslint/.eslintrc.js
@@ -1508,6 +1508,9 @@ module.exports = {
     // jQuery for type documentation
     JQuery: 'readonly',
 
+    // JSON diffs
+    jsondiffpatch: 'readonly',
+
     document: 'readonly',
 
     // for linting Node.js code