diff --git a/packages/react-json-tree/jest.config.js b/packages/react-json-tree/jest.config.js
new file mode 100644
index 00000000..8824c114
--- /dev/null
+++ b/packages/react-json-tree/jest.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  preset: 'ts-jest',
+};