diff --git a/packages/core/package.json b/packages/core/package.json
index d95ca5c81f..6b3f3cb301 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -3,6 +3,7 @@
   "version": "1.2.2",
   "description": "Library providing ability to translate messages directly in context of developed application.",
   "main": "index.js",
+  "module": "./dist/tolgee.umd.js",
   "types": "./lib/index.d.ts",
   "repository": {
     "type": "git",
diff --git a/packages/ui/package.json b/packages/ui/package.json
index 5a6c0206b1..ec217540b7 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -3,6 +3,7 @@
   "version": "1.2.2",
   "description": "Translation mode UI for @tolgee/core package",
   "main": "index.js",
+  "module": "./dist/tolgee-ui.umd.js",
   "types": "lib/index.d.ts",
   "declaration": true,
   "directories": {