diff --git a/.changeset/tasty-impalas-hug.md b/.changeset/tasty-impalas-hug.md
new file mode 100644
index 00000000..ef31c4b2
--- /dev/null
+++ b/.changeset/tasty-impalas-hug.md
@@ -0,0 +1,5 @@
+---
+'@portaljs/core': patch
+---
+
+Fix what's getting published to npm by specifying `files` in package.json.
diff --git a/packages/core/package.json b/packages/core/package.json
index dc4fa027..43998f04 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -16,6 +16,7 @@
   "publishConfig": {
     "access": "public"
   },
+  "files": ["dist"],
   "type": "module",
   "main": "./dist/index.js",
   "dependencies": {