diff --git a/package.json b/package.json
index eb3a461d..ef6fafb7 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,6 @@
     "eslint-plugin-standard": "^4.0.0",
     "jasmine": "^3.3.1",
     "nyc": "^13.1.0",
-    "promise-matchers": "~0",
     "rewire": "^4.0.1"
   },
   "engines": {