diff --git a/package.json b/package.json
index 4412e59..004fadc 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "openzeppelin-solidity": "^2.5.0",
     "solidity-coverage": "^0.5.4",
     "solium": "^1.1.7",
-    "truffle": "5.3.1",
+    "truffle": "5.9.4",
     "truffle-hdwallet-provider": "0.0.5",
     "truffle-plugin-verify": "^0.5.7",
     "web3-utils": "^1.0.0-beta.34"