diff --git a/package-lock.json b/package-lock.json
index 1887906..9d31fc8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1257,6 +1257,12 @@
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       }
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@@ -1289,12 +1295,128 @@
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+        "jest-diff": "^25.2.1",
+        "pretty-format": "^25.2.1"
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     "@types/json-schema": {
diff --git a/package.json b/package.json
index 40a132f..990c3d8 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "xml-js": "^1.6.11"
   },
   "devDependencies": {
-    "@types/jest": "^24.0.23",
+    "@types/jest": "^26.0.9",
     "@types/node": "^12.7.12",
     "@typescript-eslint/parser": "^2.8.0",
     "@zeit/ncc": "^0.20.5",