diff --git a/emscripten/package.json b/emscripten/package.json
new file mode 100644
index 000000000..9b822bbfd
--- /dev/null
+++ b/emscripten/package.json
@@ -0,0 +1,8 @@
+{
+  "name": "trezor-crypto-test",
+  "version": "1.0.0",
+  "description": "",
+  "dependencies": {
+    "bitcoinjs-lib": "^1.5.7"
+  }
+}