diff --git a/package.json b/package.json
index 6edc96d..ac5ae3f 100644
--- a/package.json
+++ b/package.json
@@ -87,6 +87,7 @@
     "@types/benchmark": "^1.0.31",
     "@types/deep-freeze": "^0.1.1",
     "@types/jest": "^24.0.0",
+    "@types/jest-diff": "^20.0.0",
     "@types/node": "^10.11.0",
     "@types/object-hash": "^1.2.0",
     "benchmark": "^2.1.4",
diff --git a/yarn.lock b/yarn.lock
index 6c4e3a3..7667fcb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -457,6 +457,10 @@
   version "9.12.3"
   resolved "https://registry.yarnpkg.com/@types/highlight.js/-/highlight.js-9.12.3.tgz#b672cfaac25cbbc634a0fd92c515f66faa18dbca"
 
+"@types/jest-diff@^20.0.0":
+  version "20.0.0"
+  resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.0.tgz#3d1acf8d25d878c3566cd13b4e4e1f4fd6640111"
+
 "@types/jest@^24.0.0":
   version "24.0.3"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.3.tgz#df8dc56565bd2d27fcbd099434f04f9891e16ab7"