--- a/tests/package.json
+++ b/tests/package.json
@@ -132,6 +132,7 @@
     "@polkadot/util-crypto": "12.2.1",
     "@polkadot/wasm-crypto-asmjs": "^7.2.1",
     "@polkadot/wasm-crypto-wasm": "^7.2.1",
+    "chai-as-promised": "^7.1.1",
     "chai-like": "^1.1.1",
     "csv-writer": "^1.6.0",
     "find-process": "^1.4.7",