diff --git a/package.json b/package.json
index 470961ce..faad4870 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "hardlydifficult-ethereum-contracts": "0.11.1",
     "papaparse": "5.3.0",
     "truffle-assertions": "0.9.2",
-    "truffle-flattener": "1.5.0",
+    "truffle-flattener": "1.6.0",
     "truffle-hdwallet-provider": "1.0.17",
     "web3": "1.3.0"
   },