diff --git a/package.json b/package.json
index 662edc0..b2d5b5f 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "files": [
     "dist"
   ],
-  "type": "commonjs",
+  "type": "module",
   "sideEffects": false,
   "exports": {
     ".": {
diff --git a/tests/package.json b/tests/package.json
deleted file mode 100644
index 2922de2..0000000
--- a/tests/package.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "type": "module",
-  "//": "Temporary until we can set this in the root"
-}
diff --git a/tsdown.config.mts b/tsdown.config.ts
similarity index 100%
rename from tsdown.config.mts
rename to tsdown.config.ts