diff --git a/packages/theme/package.json b/packages/theme/package.json
index f27fc9e385..a23c87c13d 100644
--- a/packages/theme/package.json
+++ b/packages/theme/package.json
@@ -6,9 +6,7 @@
     "role": "web-library"
   },
   "publishConfig": {
-    "access": "public",
-    "main": "dist/index.esm.js",
-    "types": "dist/index.d.ts"
+    "access": "public"
   },
   "keywords": [
     "backstage"
@@ -28,6 +26,16 @@
     "./MuiClassNameSetup": "./src/unified/MuiClassNameSetup.ts",
     "./package.json": "./package.json"
   },
+  "typesVersions": {
+    "*": {
+      "MuiClassNameSetup": [
+        "src/unified/MuiClassNameSetup.ts"
+      ],
+      "package.json": [
+        "package.json"
+      ]
+    }
+  },
   "main": "src/index.ts",
   "types": "src/index.ts",
   "files": [