diff --git a/scripts/ganacheHelper.js b/lib/ganacheHelper.js
similarity index 100%
rename from scripts/ganacheHelper.js
rename to lib/ganacheHelper.js
diff --git a/test/MerkleTreeWithHistory.test.js b/test/MerkleTreeWithHistory.test.js
index 63a5cfb..5d0b2d8 100644
--- a/test/MerkleTreeWithHistory.test.js
+++ b/test/MerkleTreeWithHistory.test.js
@@ -4,7 +4,7 @@ require('chai')
   .use(require('chai-as-promised'))
   .should()
 
-const { takeSnapshot, revertSnapshot } = require('../scripts/ganacheHelper')
+const { takeSnapshot, revertSnapshot } = require('../lib/ganacheHelper')
 
 const MerkleTreeWithHistory = artifacts.require('./MerkleTreeWithHistoryMock.sol')
 const MiMC = artifacts.require('./MiMC.sol')
diff --git a/test/Mixer.test.js b/test/Mixer.test.js
index ba009ed..53a666b 100644
--- a/test/Mixer.test.js
+++ b/test/Mixer.test.js
@@ -6,7 +6,7 @@ require('chai')
 const fs = require('fs')
 
 const { toBN, toHex, randomHex } = require('web3-utils')
-const { takeSnapshot, revertSnapshot } = require('../scripts/ganacheHelper')
+const { takeSnapshot, revertSnapshot } = require('../lib/ganacheHelper')
 
 const Mixer = artifacts.require('./Mixer.sol')
 const { AMOUNT, MERKLE_TREE_HEIGHT, EMPTY_ELEMENT } = process.env