diff --git a/jest.config.js b/jest.config.js
index 665b8bcd..6e88b8fb 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -15,4 +15,7 @@ const customJestConfig = {
   testEnvironment: 'jest-environment-jsdom',
 }
 
-module.exports = createJestConfig(customJestConfig)
+module.exports = async () => ({
+  ...(await createJestConfig(customJestConfig)()),
+  transformIgnorePatterns: ['node_modules/(?!(isows)/)'],
+})
diff --git a/jest.setup.js b/jest.setup.js
index e643574f..8af8c3ed 100644
--- a/jest.setup.js
+++ b/jest.setup.js
@@ -43,3 +43,7 @@ jest.mock('@web3-onboard/core', () => () => ({
     get: () => mockOnboardState,
   },
 }))
+
+const { TextEncoder, TextDecoder } = require('util')
+global.TextEncoder = TextEncoder
+global.TextDecoder = TextDecoder